Stash to hand down through several kids

[tentrevival]

What, if anything, would you do differently if you needed to build a stash that would last through several kids?

My husband and I are very fertile, we get pregnant very quickly, and I am only 26, so we have years to go. We also would like to adopt from Ghana and Haiti. So I am looking at at least 4 more kids.

I know that sized is worth it for us, because they will last longer and fit better, but is there a system you think will be more durable? Certain fabrics you would avoid?

I will probably sew most of any stash we have because I like my pattern best. I hate being too picky, because I hate wasting useful things, but I do want colors to stay bright etc. I hate using frayed faded diapers on our cute little babies.