We did look at the idea of letting people arbitrarily arrange a string of LEDs then somehow map the sub-models to the new positions (which LEDs are "left eye open", which are "mouth shape E", etc.), but we couldn't find an LED string we liked that was both cheap and individually-addressable.
Also on the drawing board was some sort of "tiles" of letters which would be be rearranged by the user and illuminated in a fixed grid, then have different messages light up like a wordsearch. It could also be used to make those "word clocks" that are out there, that spell out "it is half past four" for example.
Also on the drawing board was some sort of "tiles" of letters which would be be rearranged by the user and illuminated in a fixed grid, then have different messages light up like a wordsearch. It could also be used to make those "word clocks" that are out there, that spell out "it is half past four" for example.