Boys got a cool but old bike (I mean, trike) from our neighbor. Rear wheels were in a pretty bad shape, and brake did not work.
Here are the old rear wheels feel up my trash can. Well, they still worked, but were quite noisy, and I was concerned, that boys can cut their skin with those nasty cracks in plastic if they fell on one.
I purchased new 10″ wheels in Harbor Freight for $6 a piece and installed them on a bike. I also finally fixed the brakes. Boys like to ride this bike from the hill down on our cul-de-sak, and they do it bare fit, so fixed brakes should save them some bleeding.