Another use for the Evaporation trick would be for a magic effect where a cup or bowl with liquid disappears like in this :
However using the Evaporation gimmick that will turn this into a one person trick. You could use an cup / bowl, cloth and a servante on the table and you Are good to go! Or you could use a use a tray, cup/bowl and cloth. Since there’d be no liquid in the cup or bowl you could do the “move” yourself and simply toss the tray into your case.
No mess or extra people.