Rescue battered wood. Pallets and pallet stock are cheap (or free) and easy to come by. Look for untreated specimens at construction sites, community colleges, buildings under renovation, or shipping warehouses and plane them down and/or kiln-dry them in a homemade kiln-dryer to uncover their hidden beauty. You can then resell the wood as is or even turn it into beautiful furniture. (Be sure to advertise that the wood is “reclaimed,” as people are often willing to pay much more for this.)
If you’ve got some free time and don’t live in the middle of nowhere, becoming a Lyft driver can be a very lucrative side hustle that allows you make money fast. And right now, they’ve got a promotion going on where any new driver will instantly get a $300 bonus after completing their 100th ride. If you start now and hustle hard on the weekends, you can probably unlock that bonus within a few weeks of driving (and that’s in addition to your normal earnings).