Using LostMyKitty's inspiration about litterboxes and scents, I scooped out the litterboxes and put the um, clumps of stuff all around my property. At night, I slept with the windows cracked and front door open (due to a security screen door). I also freaked out a lot, but that was not helpful.
A few days later, at 4 AM, I heard a cat meow outside. I got up and went out there, and it was my cat! Hungry, thirsty, and in need of lots of cuddles and holding.
Thank you for the advice, LMK. It was priceless. Also the Lost Pet template. Thank you to all the total strangers in my neigborhood, the local shelters and pet store who said they'd be on the lookout and who let me post my flyers.
Neverending blessings to you all.