ACG provided a good list and so have others. Small addition would be that if you aren't going to cover your whole bike at night you could put a shower cap over the seat to keep that dry for you from dew or rain. They're small and lightweight.

Call me a neatnut but I usually take a scrap piece of carpet for a door mat for the tent and then dispose of it when I break camp down. I just don't like sand or dirt in the tent. You could even keep one inside the tent and one outside.