Simply Conveyors & More is a mod in which you use conveyors in both moving items around and using them as the player’s transport. It has multiple types of conveyors to fit your needs.
Can push virtually any type of Entity.
Holds entities in place on it unless it is powered by redstone.
Conveyors that go straight up.
Yup, it has upside-down conveyors too.
Inverse Holding Conveyor
Inverse version of the Holding Conveyor. Instead of working like a normal inverse conveyor when it is powered by redstone, it drops the entity it is holding straight down.
Stair versions of the normal conveyors. Only really works with players.
Works just as a hopper would. Sends items downwards, and downwards only.