HELLO everyone :D Today i made this really tini contraption that catches you in mid-air when you fire an ender pearl upwards, its not much but here it is :D

First make a really slow clock like the one in the snapshot above  ^
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Then run it into 2 command blocks. One of them has the following command:execute @e[type=ThrownEnderpearl] ~ ~ ~ fill ~1 ~-2 ~-1 ~-1 ~-2 ~1 slime.


And the second one:execute @e[type=ThrownEnderpearl] ~ ~ ~ setblock ~ ~3 ~ water

And its that easy! Make sure to download the map too :)