I'd add a compass, Immodium (or your diarrhea med of choice), a few sewing needles and either fishing line or dental floss, and if you have the room, a tiny tube of superglue.

Also, aspirin, ibuprofen, and Tylenol are largely interchangeable in an emergency situation, so I'd stick to whatever works best for you. For the hardcore "I might not be able to reach my main kit", you may want to toss in a zip lock bag, a few (3-5) water purification tablets, and an AA or smaller LED flashlight.