i am a total recycler, scrounger & pack rat.... hate 2 waste anything !
but i do throw out duplicate boxes & instruction sheets.
if it's a side-opening box, i'll replace it w/ a top-opening box from some other kit
once i get 2 building so it's less likely that i'll lose parts.
i use ziploc bags 2 keep track of spare parts & templates 4 scratchbuilt parts.
i keep the instruction sheets in a dedicated 'vehicle reference file' since i often scribble construction tips on 'em...
that way if i do build the kit again, i can remember any "issues" i came upon during the 1st build.
also cut out good box art & save for reference material
frosty