I lost many of my old Sims Pack files, came here to re download and noticed many broken download links. So I started collecting from the Store using free points I have accumulated. Here is the links to my items I have managed to get. It will be updated from time to time so if you don't see an item you need, then maybe it will be there later.
This Exchange item contains one or more items from the Sims 3 Store, expansion pack(s) and/or stuff pack(s). Head Start Playpen. This playpen will prove it.

Sims 3 Head Start Playpen Free Download
Sims 3 Head Start Playpen For Free

Workaround for the Playpen and Walker reset bug

Update: This mod is now considered obsolete as I have made an actual FIX for the issue. Get the fix At Simlogical:

Adults can play with their toddlers in the playpen, and if you have two toddlers in the playpen, they’ll play together! Toddlers love the Head Start Playpen! Watch as your toddler’s motives magically fill as they enjoy activities that will set them up to succeed later in life!

FIX for Walker and Playpen Reset Bug

*** Obsolete*** Chicken invaders 6 free. download full version for windows 7.

This mod provides a workaround for the bug affecting the Walker and Playpen premium content objects from the Sims 3 Store. Since patch 1.63, the walker and the playpen no longer function properly and cause the toddler to reset. This happens when the toddler uses one of the following interactions: Play with Abacus (playpen), Play with Mirror (playpen) or Play (Walker) and has already achieved the “maximum” skill level allowed for the object/interaction (Logic: 3, Charisma: 3, Handiness 2, respectively).

This mod removes the skill gain from the following interactions: Play with Abacus (playpen, logic), Play with Mirror (playpen, charisma), Play (walker, handiness). This means your sims will no longer be able to gain any logic, charisma or handiness skill points from these objects. Your sim will still be able to learn to talk and learn to walk on their own, but if you want them to learn logic, charisma, or handiness, you’ll need to use NRaas MasterController or another mod to assign the skill to them.

I did try to fix this problem with a script mod, and I even tried to fix the problem by unhiding the skills for toddlers in the Skill XMLs, but none of it worked. I know that this work around will remove some of the usefulness of the premium content, but at least your toddlers will be able to use their walkers and playpens without resetting.

Note: You MUST have the Head Start Playpen or the Local Motion Toddler Walker (or both) from the Sims 3 Store in order for this mod to work. It will NOT add the objects to your game.

Important Details:

No Expansion packs required.
Requires patch 1.63.
This mod requires either the walker or the playpen, or both, from the Sims 3 Store to be installed in your game. You can use this mod whether you have only one object or both.
Again, this mod will not add the walker or the playpen to your game. You must have already installed these objects for this mod to have any effect on your game.
Due to its simplicity, this mod may not necessarily require an update after major patches. It’s always best to check in, though.

*** Obsolete***

Sims 4

First Impressions
Base Game Review

Game Packs

[ ] Outdoor Retreat

Sims 3

First Impressions
Base Game Review

Expansion Packs

[ ] World Adventures
[ ] Ambitions
[ ] Late Night
[ ] Generations
[ ] Pets
[ ] Showtime
[ ] Supernatural
[ ] Seasons
[ ] University Life
[ ] Island Paradise
[ ] Into the Future

Stuff Packs

Sims 3 (head start playpen) free download

[ ] High End Loft Stuff
[ ] Fast Lane Stuff
[ ] Outdoor Living Stuff
[ ] Town Life Stuff
[ ] Master Suite Stuff
[ ] Katy Perry’s Sweet Treats
[ ] Diesel Stuff
[ ] 70’s, 80’s & 90’s Stuff
[ ] Movie Stuff

PC Items to Review (That I Own)

[ ] Sizzle Baby Pro Deep Fryer
[ ] Frost-Bite Pro Ice Cream Machine
[ ] Aims Co. Choc-O-Falls Fountain
[ ] Chun Co. Teppanyaki Grill
[ ] Wood Fire Oven
[ ] Warbling Wind Chimes
[ ] Solace Snugabunny Deluxe Baby Swing
[ ] Keep Me Clean Outdoor Shower
[ ] Steam-It-Up Sauna
[ ] Infinite Zen Massage Table
[ ] Dirty No More Changing and Bathing Station
[ ] Gift of Speech Baby Monitor
[ ] Wishing Well
[ ] Rim Rockin’ Basketball Hoop
[ ] Buzzer Beater Free Throw Machine
[ ] Plants vs. Zombies™ Sunflower
[ ] SwiftGro Gardening Station
[✔] Barrier to Entry System
[✔] Large as Life Movie Screen
[✔] Archer’s Gauntlet
[✔] Fit as a Fiddle Violin
[ ] Lady Ravendancer Goth’s Book o’ Spells
[ ] Lord Vladimir’s Magic Cauldron
[ ] Soothsayer’s Crystal Ball
[ ] Malleable Mimic Voodoo Doll
[ ] Red Dragon
[ ] Green Dragon
[ ] Purple Dragon
[ ] Armored Black Dragon
[ ] The Not So Routine Machine
[ ] Tree of Prosperity
[ ] Vertical Challenge Rock Wall
[ ] Laganaphyllis Simnovorii (aka The Cow Plant)
[ ] MultiTab 6000
[ ] Atomic Jack Planet Attack Pinball Machine
[ ] Classic Gumball Machine
[ ] Leon’s Fountain of Youth
[ ] It’s Not Gross Public Shower Station
[ ] Stiff as a Board, Light as a Feather Dance Collection
[ ] Surf’s Up Sun and Fun Collection
[ ] It’s Business Time Industrial Oven
[ ] Humble Harvest Stands
[ ] Fowl and Feathers Chicken Coop
[ ] Milkin’ It Dairy Coral
[ ] The Titanic Toy Machine
[ ] Bohemian Fruits & Nuts
[ ] Door of Life & Death
[ ] The Titanic Toy Machine
[ ] Sky High Roller Coaster Cart
[ ] Classically Cool Fixer Upper Car
[ ] Grampa’s Grove Tractor
[ ] Artisan’s Glassblowing and Jewelry Making Station
[ ] Baker’s Station
[ ] Baker’s Bazaar Collection

Sims 3 Head Start Playpen Free Download

PC Items to Review (Don’t Own Yet)

Sims 3 Head Start Playpen For Free

[ ] Sharper Sim Foot Massage Chair
[ ] Head Start Playpen
[ ] Local Motion Toddler Walker
[ ] Sharper Sim’s Super Sleeper
[ ] Uber Sani-Sim Toilet
[ ] Dead Man’s Hand Poker Table
[ ] Let it Ride Roulette Table
[ ] Hit ’em Harder Blackjack Table
[ ] Triple Riches Slots O’Jackpots Slot Machine
[ ] Hot Air Balloon
[ ] Local Motion Toddler Walker
[ ] Head Start Playpen