the fox medium tackle box could fit the bill, its designed for carp anglers tho, it has adjustable dividers and i think 2 catches on the lid to keep it tightly closed . I used the large version for years when i used to carp fish and it was excellent.
whatever you get make sure its "worm proof" or you SPs will dissolve every thing!
whatever you get make sure its "worm proof" or you SPs will dissolve every thing!