I have not been able to find Teddie since I woke up this morning. He was laying on the bed with me when I fell asleep (we made it all the way out to the living room yesterday evening), but I haven't been able to find him since! I know he couldn't get outside, unless he's a very gentlemanly cat who closes and locks screens and doors behind him when he leaves, but I am DAMNED if I can figure out where he has gotten to! I've checked all the ground level cabinets (as there was evidence they had been explored last night), as well as behind the fridge, desks, toilet, and bed, and on top of the higher kitchen cabinets. I have to go to tech now, so I hope he's not stuck somewhere! I'll be back at dinner to try to look for him again!
ETA: When I got home over dinner, after frantically tearing the apartment apart and a tearful phone call to Steve about me being a terrible kitty mommy, I discovered him curled up in a kitchen drawer. Apparently, he had climbed up into the drawer after getting into the cabinets last night, but then couldn't get out and decided it was a nice place to spend the day. He wasn't too happy about being pried out by Steve and I (Steve brought dinner over for me!), and hid in his little cat tree for the rest of the dinner break. Steve came back during the evening and cat-proofed the cabinets so Teddie can't get back into them, and said that Teddie spent the whole time under the bed. He has eaten and used the litter box, though, and I'm going to go play with him a bit more now to try to coax him out.