Sugru, the mouldable silicone that can repair cables and clean up rusty tap grips, has found itself another niche an as earbud reviver. DIYer Spode writes about how he fixed an almost-dead pair of earbuds with a bit of know-how and some Sugru.
While you could just buy a new pair of earbuds, Spode wasn't about to let his $300+ Shures just rot in a garbage can without an attempt to fix them. So, when the right earbud became finicky, he took them apart, re-soldered the wires together, and created an entirely new casing for each earbud with the Sugru. It's a bit more than just your mould-and-fix job, but for reviving a pair of expensive headphones, it's definitely worth the work. Hit the link to see how it was done.