Down 107th, there's also a gardening place that neglected to put up a "customer parking only" sign, so you could definitely park there if all other options are taken. It's two blocks north of our building tucked beside the Women Building Futures building.
Although we discourage parking in the spots designated for Apoc employees and Creative Images in the back of our building, due to a vendetta we have with the craft gallery (also behind us), you're more than welcome to park in their little lot across the alley from ours
Just make sure you don't park in Khazana's spots back there. They DO call in tows if they catch non-employees parking there.
Also, parking in front of the See Zen Benevolent Society (the "chinese" but actually Vietnamese-Korean community hall next to our complex. Big white building. Hard to miss) has allowed us to have parking for our customers on WEEKDAYS ONLY. Weekend parking is reserved for them.
That enough viable no-pay parking for ya?