A backpack Jetpack Upgrade flies and charges like a Create jetpack, from the chest slot or the back slot, and keeps the tank slot and the inventory. Felling drops the grown logs, holds sticks and seeds until that branch or leaf breaks, and takes longer on thicker trunks. Saws mill a cut into drops, drills fell that part, and severed branches fall on their own. Fallen trunks float and slow in water, and Jade can show the logs a chop will drop. The slicer strips logs an axe can strip when they have no cutting recipe, and a rubber log can drop raw latex on the slicer or the mechanical saw.
Rain and snow stop on assembled trains, pistons, elevators, and bearings, except through a hole in the roof. Leaving the crash screen unlocks the keyboard, so F3+C can force another crash, and a singleplayer crash opens that screen while the world is still saving. Caves under the ocean can flood from the sea again.