What to do with old flux

I have a first gen Flux delta. I recently bought a newer printer and have boxed up my flux. Is there anythin*I can do with it? Is there a resale part?

I am thinking of converting my updated 1st gen Flux delta, since I switched to another printer. I saw a mod in Thingiverse, https://www.thingiverse.com/thing:2671265, to turn Flux to an engraver. I may print that and try to adapt a small high speed motor with a chuck (aliexpress carries some) and Dremel bits. If it works, I can use my Flux to make PCBs, cutting traces in thin copper clad material.