just some ideas in no particular order

if there are swimming pools available, you might look at a Sawyer .1 micron 5 gal filter kit from Adventure Safety Products
and prepare your loaner kits in 5 gal buckets so they can carry water

the ever popular blue tarp and deck screws... firring strips...roof mastic

Stanley "Yankee screwdriver" on loaner basis to attach said tarp, hammers, nails

mosquito netting or citronella buckets

1 gal cans to be made into charcoal cookers+ small bag of charcoal briquets... arrange group cooking time using available LP grills

demonstrate how to make a floating candle... glass jar 2/3 full of water with 1 inch cooking oil on top, floating wick in small aluminum "boat".....small block of paraffin to make light source

demonstrate how to flush toilets by pouring into bowl not tank

couple of short hose sections to access hot water heater drain spigots

couple of extra 5 day coolers for meds and formula... check out Engel Australia 12v refrigerators (pricey)

log chain w/hooks, and hand saw/chainsaw to remove downed trees blocking access

Clorox and directions to treat water and disinfect surfaces

garden sprayer (no "-cides") to use as shower

best thing is to share your knowledge...we have a problem here in Florida...when Craig Fugate was Emergency Management Director the state and local agencies worked so well in response, people looking for "entitlement" were lining up for their ice, water, and MREs when the wind on the back side of the storms was still blowing 40+