FIVE MINUTES TO AWESOMENESS WITH A LATEX BALLOON AND A TEA LIGHT

Okay well you have to let it freeze, but crafting doesn't get any more simple + awesomer than THIS:

Quick! Go freeze some water balloons and impress everybody at Christmas with you ninja-like, ice craftiness. The trick is to not fill them all way. That way there's a indentation, cave-like spot to set the tea light.

I found it on a Swedish blog.... How freakin' AWESOME!!!