trying not to repeat other comments:
case for them sunglasses
(i also carry a small eyeglass repair kit)
diarrhea medicine/small tube vaseline/bengay
drivers license (is other photo id adequate everywhere?)
chain tool, spoke wrench
spare rack/cage bolts
duck tape/'lectrical tape wrapped around a swizzle stick
tire boot
small tube o'lube for squeaky seatposts
thongs (flip-flops) for campground showers
delete one spare tube
ziploc bags