Kid's stuff. The little pieces. The piles. The stuff they play with that aren't actually even toys (I'm looking at you, rocks and cardboard boxes!).
Not to mention the (very generous and thoughtful) gifts from family and friends. The (LOTS) of laundry. The kitchen supplies and utensils. I could go on, but you get it, so I won't.
I put the kitchen set (Christmas gift) in our kitchen for now, so we could "work together". Our wonderful family gifted A LOT of fake food and kitchen accessories for birthday (October) and Christmas - two weeks ago, I put a lot of it in the toy bins to see what could happen... Let's just say the current amount of fake food in the bins has been cut down by 2/3. She's still thrilled, plays with it multiple times a day, and reaches for the cupcakes, donuts and pizza instead of the veggies.
In one word, tell me, what is your biggest struggle with "kid stuff"?