Check out this cute project pouch set I got from Piddleloop Sewing Team:
The inside of the project pouch has a pocket on one side and an elastic needle/hook holder on the other side. I love how they use a different fabric for the inside!
The project pouch also has a grommet hole on one side so you can keep the pouch closed while knitting. I definitely want to get a few more of these! :)