www.theCardLadies.com
They have die cuts in many shapes (not just geometric) in both matboard type weight and in Shrinky Dink! Look under their "Stiff Stuff" and "Shrink Stuff" sections.
I got some cute gingerbread men, about 3" size and they perfectly match a stamp from My Sentiments Exactly that has a gingerbread poem in the same shape - stamped the poem on one side and colored in the cookie on the other side - cute ornaments. Did the same with the shrink die cut too, makes a nice embellishment for card or could be used on a pin or earrings.
They have frames, boxes, match book covers, small pillow boxes. Many shapes in acrylic also. Very good prices.
~ Kathy