Summary

I find the A1 boxes from Amazon make for great project storage but if you leave the flaps on, they don't stack well and are annoying to get in to and if you cut them off, the boxes fall into each other. So here I designed some clips to go on the top of a de-flapped box to allow other boxes to stack neatly on top.

These should need no support but I used a raft to get the base nice and clean. Use glue if permanent attachment is required.