A quick-and-dirty pass at state icons, using the same state reference plane projections as ProPublica’s excellent StateFace font, and then using TopoJSON to scale and simplify each state to fit in 48×48. Done by Bostock.
Alaska is a little bit too small because its archipelago extends far into the Pacific Ocean. It would be better to crop its bounding box more tightly.
To replicate, here's the gist.