K.I.S.S. - keep it simple sweety!
Someday you won't be here and then where will it go? Sort it out one bag/box a week if you must. Get rid of what you really know you won't use. There are church organizations, women's shelters, groups in other countries that will take all your craft stuff. Don't keep it around just 'cuz it was mom's. I did that in our basement after mom died and 24 years later and a move clear across lthe country, I am still getting rid of her stuff.
I think it is a sickness called hoarding. I don't want to be a hoarder.