Go to Midland Hardware and get the infrared thermometer gun. When I saw folks here recommending them, I was like, "Phhht. What a waste of money! $30! I can get a $5 thermometer at the grocery store."
Worth. Every. Penny. It's fast. It's accurate. It doesn't get messy. It's big enough that it doesn't get lost easily. It can't be mistaken for a meat thermometer and ruined in the oven. (Yes, that happened to me. Dad stuck my cheapo candy thermometers in the roast for 3+ hrs.) You don't have to worry about contamination from lye water to oils, or from soap to lotion.
Also, Midland Hardware has a heat gun for shrink wrapping and Norpro Funnel Pitchers.