Sun Cups would be an excellent find! As would individual serving containers of Sunbutter. There's no Whole Foods where we're going (it's not due to open until later this year), but hopefully another speciality food store exists in the area.
I also saw that Earth Balance makes crackers - may be worth trying as well, or no? According to someone I trust, they called and found out they are made in a peanut and nut-free facility.
Any other snack foods, not necessarily candy or chocolate?