Okay, here's one I bet you haven't done since... ever! Pick a rainy Saturday afternoon and dust off or vacuum the tops of all your books. Then take them off the shelf and dust behind where they usually stand. Do not sit down and read! Now didn't that feel good?
Spring is a good time to go through your closet and take any clothes that you haven't worn in a year to the Goodwill.! Let your closet breathe!
Clean or replace the filters in your home: stove vent, vacuum cleaner, dishwasher, furnace, humidifier, dryer, and air conditioner. Many of these can be washed in a dishwasher.