Show an empty glass bottle or a water bottle to the spectator, and place it on the table. Have them look through the menu and select one of the Cocktails: Campari Orange and Blue Hawaii. Take the menu back and put it in front of the empty bottle. When you lift the menu, the bottle now contains a silk of the same color as their chosen cocktail.

Easy to do. Comes with the Wonder Menu gimmick and silks.

(glass bottle is not included)

Can be performed with a borrowed plastic bottle, as well.