Well I've decided on my kit. Instead of going with a pre-made kit I whittled it down to the bare essentials - what I normally use - and put them in the smallest Omniseal bag available (about 2.5" x 5").

* 2 2-pks. of aspirin/Motrin/extra strength Tylenol, at least one of which is aspirin
* 2 benzalkonium towelettes
* 2 band aids
* And since there was room, 2 safety pins.

I made one for EDC and one to carry at work, where I carry different items. I am going to see how the EDC one holds up in the back pocket. The work one is carried in a breast shirt pocket. I also put some Leatherman tweezers in my wallet