Trying out a 3D mesh editor to Bullet soft body physics tool chain, hopefully I'll have a more visually pleasing variation on this soon. The letters I made in Wings 3D, then exported a binary stl which was then converted to a ascii stl with meshlab, then converted to a tetrahedral mesh with tetgen, then loaded in bullet physics SoftDemo:

binarymillenium.com/2010/08/first-steps-in-bullet-physics.html