Similarly to how you can use evolution stones on vanilla tools, you can do the same with custom gear and infusions. Currently, with custom gear, we have Dawnstone (Haste + Fall Damage), Duskstone (Invisibility), Firestone (Fire Resistance), Leafstone (Slow Falling), Moonstone (Night Vision), Sunstone (Jump Boost), Thunderstone (Speed), Waterstone (Water Breathing). These are obtainable through crates, other gear sets, or from other players!