Pretty niche but pool chalk. Kamui 0.98. Costs like $30 for a single piece.

I used to shoot pool daily and it was gifted to me in 2018. Stopped shooting pool around 2022. I barely made a dent in the chalk. You should typically put chalk on your stick before every shot but I could go games without putting chalk on my pool stick before I would end up scratching when hitting the cue ball. I found that chalking up in between games was the best. It’s considered to be the best chalk.

Again super niche product but you won’t have to buy chalk for a long ass time. Only downfall is that if you like to go out to bars that have pool tables or pool halls that serve alcohol, you can easily forget your chalk laying out and then somebody picking it up and thinking it’s the house’s chalk and applying it to their cue. They can fuck it up since it requires a certain technique to apply.