Miscellaneous Fixes and Jury Rigging

Post requests or neat fixes you've made.

I have a rear tail signal bulb fixture that's seen tough times. First I had to break stuff to replace the bulb, then that stuff apparently melted, then it ruined the circuit, then I scraped stuff off the contacts, then it stopped working again in cold weather, but worked in warm, but then did not work at all. Now I've scraped off more stuff from the contacts and it works until it comes slightly loose.

What can I use as a sort of temporary glue/stuffing? If it can be removed with let's say scraping at it with a pin after the bulb eventually blows, that'd be cool.