Cube Folding

Here are three folding puzzles. Each shape is to be folded into a hollow cube of unit edge length; only folding along the grid lines is allowed. Additionally, in the third puzzle both the sun and the moon must be visible on the cube’s outer surface. (In the first puzzle, the thicker line indicates a cut. The second shape has two 1 by 1 holes and the third shape has a single 1 by 2 hole.)