Old classic & slippers& the color band in single crochet is a nice touch.
Track-booties on two spokes for adults from thick yarn. Knitting with knitting needles.
Knitting pattern for Sling Heel Slippers -- ingenious & easy pattern that is knit flat with little seaming and then wrapped.
Ravelry: Luffe pattern by Lone Kjeldsen Ringel sind echt immer gut!
Crocheted Bootie Slipper Tutorial For Beginners, Super Easy! I LOVE LOVE LOVE this - a monkey could do it blind folded!
Ravelry: Braiding Sweetgrass pattern by Lisa Uotinen