Use an old CD to prevent messes
Pity the poor CD. It's not as convenient as streaming, and it's not as cool as vinyl. But you can use it to load a bowl or a vaporizer oven without making a mess. Just put the hole in the centre of the CD over your device of choice, and you never need to worry about dropping ground cannabis again.
Losing your lighter? Magnetize it
Part of owning a lighter is losing it frequently - especially when you've just taken a huge bong hit. Instead of visiting your local bodega five times a week to get a new one, just put a small magnet on your bong and keep your lighter there.
Take a deep breath
Like everything else in life, a good sesh is made even better with a break for some fresh air. Take a big gulp of fresh oxygen after any pipe/bong/vape hit to keep your head clear and your lungs limber.
Air out your stash
That principle applies to your stash too. Open your stash jar every couple of days, and shake the buds around. Letting some air in prevents mold and it keeps your stash extra fresh.