What are some alternative uses for WD40 other than as a lubricant?

We use WD40 as a primer for starting an old mower engine when cold.

A short spray is applied through the air intake to the carburetor

WD40 works well as a grease remover on laundry. Just spray a greasy stain and wash with your regular laundry soap. It also removes gum from carpets and hair. You can remove price tags or tape residue as well.