someone needs to make a tiny blockland minifigure out of... plastic?
and i has an idea for the arms and legs... well for the legs at least, you could have 2 magnets in the pelvis, and a magnet in the foot. Pelvis magnet 1 will attract Foot Magnet, and pelvis magnet 2 will repel it, but with less force. Therefore holding it in place. and for the arms i suppose the same method could apply, but since its on a different axis than gravity, it might not work as well...
or use some glass...