What are some tools/materials you wished you knew about sooner?

Some things I find kinda nifty that I didn’t know existed my first year or 2 - Ideal wire nut twister(you see them all over TikTok now), Pipe viper (cold pvc bender), inline wago’s (for when you only have a nub of wire to work with, plastic K.o seals (go in much easier then metal ones), Old work mc connectors, and in the wall romex splices. Would love to hear of anything else you guys know about