What three jobs are given to Milo, Tock, and Humbug by the faceless man?

The tasks the Terrible Trivium gives to the trio are as follows:

1) Milo is told to transfer a pile of sand from one place to another using a pair of tweezers.

2) Tock is told to transfer water from one well to another using an eye-dropper.

3) The Humbug is told to dig a hole in the mountainside using a needle.