Ok.
Easiest way : just keep 100ml or so of neat vodka in the freezer. When you rip out a pipe and have a night of it, exhale into the bottle, close lid. Better to a fix a full balloon to the neck of the bottle and shake the alcohol through it but whatever.
Exhaling onto any cool glass surface does sane, can keep mirror in fridge but that's getting weird if u do that, scrape it into vodka.
Swish the vodka around and when you're ending the drugs put it back in freezer, don't move it or take it out constant, just forget about it. If u have another night later just add to it.
Shards recrystalise in the vodka. You'll have to invent a scraper yourself, a chopstick usually works, pour out onto a ceramic dish on the window sill under a gentle fan.
You don't get a lot back but better than nothing.
Can acetone wash if u are a nerd , smokes again ok without.
Also don't do drugs with ppl who don't bring their own .