Pink Slime Block

Falling further does not throw you higher. What matters is how fast you are moving when you touch the surface, which is why a Slime Mount or a Portal Gun loop can launch you far past anything a plain drop produces.

The landing cancels fall damage, but the game does not count it as touching ground. Wings, double jumps and Rocket Boots stay spent until you hit something solid, so a shaft lined with these is a soft floor rather than a trampoline you can ride forever. Come in fast enough and the bounce can fail outright and hand you the full fall damage anyway, so any launch setup needs a real landing zone as backup.

Pink Gel only comes from Pinky, and it also feeds Pink Torches and the bouncy throwables, so paving a wide area with these is a genuine cost. Silly Balloons do almost the same job for pocket change, provided the Party Girl has moved in and a party is running. Use the blocks where you want something permanent and solid, like the floor of a hellevator, and use balloons for everything else.