Some shots just aren’t straightforward. Or maybe you’re in a buggy and want to cover your options without having to run back and forth.
However it’s happened, you’ve arrived on the scene with more than one club in your hand. If you’re in a bunker, what do you do? Can you place your spare club in the sand with you, or do you have to carefully keep it away? What’s the deal?

Golf bunker rule: Placing clubs in a bunker
It’s all good. Set them down, chuck them in there, it’s all the same. Rule 12.2b (2) allows you to place clubs in a bunker. This extends to equipment and other objects but try not to leave the sand looking like it’s been attacked by fly-tippers.
People sometimes get hung up on the idea they may be testing the condition of the sand but you just need to think logically about it. Don’t go deliberately pulling, scraping, and other such adjectives, and you’ll be fine.
You will get the general penalty (two-strokes or loss of hole in match play) if you improve any of the conditions affecting your stroke in the sand.
What do I mean by that? It’s all covered in Rule 8.1 but it’s basically improving your lie, area of intended stance, line of play, and area of intended swing when you’re tossing your spare sand iron.
