This library lets you draw pixels on the terminal using the Unicode Braille characters. There's 2x4 "pixels" in every character, so a 80x24 terminal gives you a drawable 160x96 "screen". Pretty useful for remote connections! Of course, your terminal should emulate a standard VT100.
This library includes functions to draw in your terminal (loosely inspired by the TI-83+ line of graphic calculators) along with a few examples. Of course, don't expect every pixels being lined up perfectly, it depends of your font. Which should support the Braille characters.