first of all, the journal thing is amazing! i hope when i have kids, i remember that idea!!
my mom would always send me little care packages with all sorts of random things. they would usually include necessities, such as, tampons, deodorant, razors, etc. since she knew i'd always need that stuff. (in the winter that also included some tylenol/nyquil/tissues/things for colds since i am sick 24/7)
she would include some of my favorite snacks and something baked from home - usually homemade rice krispy treats since i had no kitchen in the dorms and couldn't make them.
one time, she sent me homemade applesauce (which is one of my top 5 favorite foods.) she froze it before sending and purchased some dry ice at our local grocery and a small Styrofoam cooler and it kept perfectly.
i think my favorite care package was when i was starting to feel homesick... i am from a small beach town in nj. (from march to november, i literally spend every second on the beach tanning, swimming, kayaking, fishing, walking my dogs, etc. so the beach is very much a part of me.) i don't think i realized how much it was a part of me until this beach kid was stuck up high in the pocono mountains with no water in sight. so my mom went to the boardwalk and bought me some silly "jersey girl" tshirt that was for tourists and something i'd never in a million years wear (but i wore it to sleep most nights at school, don't tell ;)) she also included cotton candy and salt water taffy and my favorite part: a cute glass bottle filled with the beach's sand (and a message in the bottle) and a seashell she found that day. this care package meant the most to me and i'll always remember it.
yes, that was a long story but maybe it'll spark some ideas about your CP's hometown too, just in case she gets homesick :D