I use mineral oil and WD-40 for almost everything I'm not going to eat. The floor, the carpet, my desk... I don't mean to use it on all that, but my aim isn't very good.
A note on WD-40 from Wikipedia:
"WD-40's formula is a trade secret. The product is not patented in order to avoid completely disclosing its ingredients.[2] WD-40's main ingredients, according to U.S. Material Safety Data Sheet information, are:
50%: Stoddard solvent (i.e., mineral spirits -- primarily hexane, somewhat similar to kerosene)
25%: Liquefied petroleum gas (presumably as a propellant; carbon dioxide is now used instead to reduce WD-40's considerable flammability)
15+%: Mineral oil (light lubricating oil)
10-%: Inert ingredients"