What's one thing you'll happily spend money on, and one thing you're ridiculously cheap about?

I believe everyone has weird habits around money that may not make sense to others but definitely make sense to you.

I'll happily spend extra for a direct flight because I hate layovers.

But ask me to pay for bottled water at the airport and suddenly I'm standing at the water fountain like it's a personal mission.

It rarely makes sense.

I know people who won't blink at a $300 dinner but will drive across town to save 10 cents a gallon on gas.

Others buy the newest phone every year but keep wearing the same shoes until they're falling apart.

What's your combination?

What's one thing you'll always splurge on, and one thing you're surprisingly cheap about?