Soft and comfortable:
Starhemei Soft TPU Cover
Clear cases are cool and all, but having a pattern on the back of the clear case is even better and that's what you'll find with the Starhemei Soft TPU Cover. This case has reinforced corners for improved shock absorption, raised lips around the display and camera module, and features six different designs to choose from.$7 at Amazon
Extra grippy:
Entaifeng Grippy Case
If you want to get a case for the Nord N100 but are concerned about it slipping out of your hands or off a desk, then you'll want to check out the Entaifeng Grippy Case. This slim and lightweight TPU case has a rubberized grip, and is easy to snap on or off. Plus, there's a three-month warranty included if something happens to your case.$7 at Amazon