Fives. I had a 5x5 pixel font amongst my source material so I made it into a font. Everything is based on a 5x5 grid. Next level of this will be to use the shaped blocks to improve the curves and slopes and just make it a really small font.
Coquette Dynatype by bugmenot666 is one of my favorite fonts. It has an exotic look while being very readable and regular.
With Dynatype Z I tried to take the exotic aspects further without changing the core design too much. The lowercase got some alternates, too!
This is a clone of Coquette Dynatype