I suggest that my salvage a small electric appliance for usable parts oddball submission be considered for its own BB. This allows someone to get points even if they find out the thing they were going to try to fix isn't fixable, for one. It is also a really handy cheap way to get used parts to repair items or for other projects. I don't think it matters if the item is AC or DC, but I do think there needs to be at least 1 part they salvage from it for it to count.
I'd suggest the badge requirements
should be: post photos of beginning disassembly, mid disassembly, and salvaged part(s) that you deem worth keeping. Include some descriptions of what you're saving and their possible or intended use, how you are disposing of the other bits, and the tools you used (or photo of the tools?).
The example submission is here:
Cat Salvaging an Airfryer