Could use part of an old crib to make this bench toy box. (looks like a twin headboard to me)
Personalised toy box shown in Pavilion Grey, by Chatsworth Cabinets
My Shed Plans - I love this grown-up take on a toy box! Create a console table to organize all the toys. This rustic toy storage unit has large open bins and rolling carts for lots of toy storage. Get the free build plans.
Awesome DIY toy storage shelf or cabinet Rogue Engineer
Large personalised toy box by SiennaRoseBows on Etsy
How to build a soft-closing toy box