I took a boxful like that and scanned them before they could deteriorate any further. I prefer the tangible variety of pix, but time can play hell with them.
I sorted them first into must-scan and wanna-scan, and as I scanned I sorted the completed ones by which sibling really ought to have the originals in THEIR closet or scrapbook or whatever they choose to do with them-- I decided how far my "stewardship" of them should go, and then I just went to work, reporting to myself, without all the emotional ownership of it all. And that streamlined the project quite a bit.
I'd just say, until you make some firm decisions on how to best proceed, handle them as little as possible until you're set with supplies and space to work and a process that will make sense for you.