I am looking for a cheap (10$) alphanumeric (or graphical if you can find one at this price) small LCD display, that's also easy to find, and has I2C, SPI or whatever simple interface. Can you help me?
PS: I restrict my search to only black/white ones, and if it is graphical, it doesn't have to be big resolution
Try something like this
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You can control it with only 3 wires by useing a 74LS595 latchable shift register
for more info check the datasheet
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and http://home.iae.nl/users/pouweha/lcd/lcd.shtml