Some items for your packing checklist.

[Ratha Grimes]

Folding/camp chairs for the central platform, if you have them.

Blankets/sheets/sleeping bags + pillows for houseboat beds. Towels.

Fresh water for drinking/cooking.

Headlamp: a useful thing to have at night.

Pocket money for ferry boat operators.

Yoga mats.

Wakeboarding/waterskiing gear. Kites.

A warm sweater; it gets cold at night.

Also see: http://notephemerisle.org/wiki/Survival_guide#What_to_bring