Simple Cheap Air Conditioner-- This would be nice after a hurricane if the fan was battery powered. Neat idea for personal cooling. I'm sure it wouldn't cool an entire room, but a couple of these would be nice to help out since the heat after a hurricane is usually unbearably hot.
Woodworking Tip: Box Fan Filter " I made a cheap air cleaner for dust in my shop by attaching a furnace filter to a box fan. I just set the fan on my workbench whenever I’m sanding. It works so well that I decided to make a more permanent air cleaner. I mounted the fan overhead, attaching it to the floor joists in my shop, see drawing."
Cheap air fresheners. $1 for bags from dollar store, $7 for Unstoppables. Makes roughly 30 bags. I use them in sock drawers, closets, even have one in each car. You could also use for guys stinky boots. Scent lasts for 12 weeks, if smell starts to dwindle, shake up bag and it smells like new again!