Storage Bag & Play Mat-in-One
When I was a kid, not only did I have to walk to school in the snow (uphill both ways, mind you), but I also had to keep my Legos in a big, heavy, plastic bin. I spent half of my play time digging around in that 2-foot-deep bin looking for a particular Lego (until finally conceding, and just dumping the whole bin of Legos onto the floor). Then I would spend the other half of play time picking up all those Legos and putting them back into the bin. If only the Storage Bag and Play Mat-in-One had existed 20 years ago…