How to choose an air purifier for allergies
Choose a room air purifier.
This is your only option for an air purifier if your home doesn't have forced-air heating or cooling. These range in weight from 10-20 pounds, have a handle for moving, and stand on the floor or table in the room of choice.

They generally cost less than whole-house models, ranging anywhere from $60 to a couple hundred dollars. Room air purifiers require annual replacement of the filter that captures airborne particles responsible for allergies.

How to choose a book for a book club
Look at a bestseller list.
These books become bestsellers because people mutually liked them. It is possible that your fellow book club members will too.

Make sure you don't choose a book just because it's famous-books become famous for being bad, too. Choose a book you like, and you think others will like too.

How to make an hourglass clock out of light bulbs
Get started with a light bulb.
Globe light bulbs work best for this project. Use a light bulb that is burned out, so as to save you money.

Don't use the soft white bulbs because they are a little too fragile to work with. Start by hollowing out the inside of the light bulb.

How to keep stray dogs away from backyard
Don't leave your pets' food outside.
A sure way to attract stray dogs to your yard is to leave your own pets' food outside where strays can smell and get to it. Most strays will be hungry and looking for food.
If you feed your pets outside, make sure you bring leftover food into the house once your pets are finished. Keep trash tightly bagged and canned.