Here is the classic milk trick ready to add to your show.
EFFECT: Performer forms a paper cone using a sheet of newspaper; from a transparent jug he pours milk into the paper cone, leaving a little quantity in the jug, which he places aside on the table. Making magical passes around the paper cone he suddenly unfurls it, makes a throwing motion towards the audience - milk is found to have completely vanished!
The jug is 13 cm. high, outer diameter being 7 cm.