Yesterday I knit a footlet. I did my math homework first, though.
The pattern is "Toe Warmers - Footlets" from here. It took very little yarn, about 3/4 of an ounce of fingering weight Patons Kroy Jacquards. It was leftover from socks I had made for my bonus mother-in-law, Janie. I used a US size 1/2.5 mm needle, which is my go-to for socks.