The hand was made with a latex surgical glove. The best way I have found to curl the fingers and thumb is in a larger container filled with dry sand; the sand will hold the shape. After 2 days you can just rip the latex off.
The colors on these pieces are latex paints and the final coating can be polyurethane and/or wax after sanding the finish.
The bunny was cast from a jello mold and then the pot was formed around finished piece.
I am almost finished with my garden sphere.