Let's see, it wasn't last year, but 2000 when I did CAR 7.

Toiletry kit
7 pr shorts
6 jerseys - bought 1 on the ride for 7
7 pr sox
7 sport bras
1 pr tights
1 pr armwarmers
bike jacket
baseball cap
hoody sweatshirt
sweat pants
t-shirt (may have brought 2 or 3, I forget)
1 pr jeans (worn on orientation day)
flip flops
tennies
2-3 prs regular sox
drugs - the legal kind
hydration pack
extra hydration pack tank -- not needed
tubes - not needed, thank you Pasela TG tires
sleeping bag
sleeping pad
camping pillow
towel
8 pr panties (didn't need them, after day 2 I went commando with my sweats)
pants and shirt for train ride home
book
camera
film (lost one roll somewhere.....)
water bottles (for gatorade)
sunscreen
zinc oxide
luna bars (because God knows, they don't feed you enough on these rides )
bike shoes
tent decorations

whew.

First year - brought too much, had to lash my sleeping bag and pad on the outside of my duffle.

Second year I managed to pack everything inside the duffle. I was so proud, then I got sick and didn't get to ride.