Homebrew PCBs

Fellow listers, sending this inquiry out to a few of my lists to get 
feedback.


Wifey nuked a sponge (scrubby green w/yellow ) until it caught 
fire....yeah, concerns me too.


The thing still works, insides have been cleaned, but the stench of 
burned sponge/scrubby is horrendous and gets into any food cooked.
Soooo, before I try to freecycle it to whatever person wants to take on 
the stench or drop it off on electronics recycling day, I was trying to 
think of workshop uses, and honestly I can think of none.


Whadaya think - Uses?


Thanks


Corey