I would start with one of these I keep it in my laptop bag for trips. It's the same size as the PSK



(if the image doesn't show up it's the AMK pocket medic)

The tweezers are great for splinters (never had to use them ticks), and it used to come with decent folding scissors.

I added a scalpel blade (which so far TSA have missed) a LED light, button compass and whistle. Then wrapped it and an orange rain poncho with 15' orange paracord.
You can also use the vial the forceps come in for ibuprofen.