Sure you can. Key Holders, and shift managers earn this part time in limited shifts. When I worked at Radio Shack I was in High School and earned because of commission.
My ExGF did well because it was a part time job and she was Very over qualified. She did a lot of tasks that required managerial experience, like supply re-orders, scheduling, time sheet reconciliation.
I actually almost took a Gig as a 20 hour a week Regional Manager for Ann Taylor when a gal was pregnant and wanted to cut her hours. I'd have been at $35 an hour and mostly doing administration tasks.
Similarly Geek Squad at best buy pays $25 an hour for MCSE's . Car Audio shops pay $35 an hour for qualified installers. There are lots of fill in and week end shift jobs that pay well.
If you are looking to supplement income you can't do better than working Holidays. Time and a half or double time for working days others don't want to adds up fast.