I made my son a quilt from Walmart fabric 3 years ago I think, maybe 4... he was still in his toddler bed and is about to turn 6. Between the kids and the animals quilts get well loved in my house
and it's holding up as well as any other quilt I've made for my kids (maybe better). But, I did buy some really cheap fabric from Walmart once because I wanted a cheap project to work on right then. The pattern I chose had triangles, and thin, stretchy material and triangles are not a good combo. The blocks are in a bag waiting for they day when I might have the patience to block them -- but more than likely I will get tired of moving them out of my way and just toss them.