McCall (MYL) is one of the more popular supply stops for backcountry pilots in Central Idaho.  Not only does it have 24 hr. self-serve fuel, but there is a grocery store and a drug store just across the street. There are even a couple of restaurants just outside the airport gate.
When you're getting low on fuel and supplies, McCall is a one-stop shopping destination.  Only 1/2 hr. flight from strips like Big Creek and Johnson Creek, it's an airport that most Idaho backcountry pilots know well.