Squares and Pentagons: The technique to insert the circle can be found at
Circles: Dog treats and Hamburger buns The results of a multipurpose baking day.
Heart: Grandpa's handwork for Ev.
Polyhedron: This was excellently crafted by Molly Crino with the assistance of Katie Crino.They gave this to me during their family's visit here. For the longest time we thought this was a dodecahedron. But we could not get the sides to work out correctly. It is actually this:
Trapezoid: (for Julie "Can you say trapezoid?")