The mint material can still be used for postage. The any higher value stuff, Jenny's C1 and C2 and two baby zeppelins could be sold as no gum stamps for a few dollars each. People who cannot afford copies with gum will fill in their collections with them. This is especially true if they are well centered.
Any other high value that you might have stuff is probably sell-able.
Or you could put the whole thing up on
ebay as a lot. Then someone else can go to the time and energy to separate them, dry, etc