Make it personal - personalized groomsmen gifts
If you are trying to think of a good gift for your groomsmen, but don’t want to spend too much time on it; maybe you should consider personalized groomsmen gifts.
If budget isn’t an issue, you could purchase them personalized golf clubs or a golf bag (for the golfers in your group); if budget is an issue personalizing a nice pen or a wallet would also be nice gifts to give to your groomsmen.
Being personalized doesn’t necessarily mean that the gift has to have their name on it. How about choosing a gift that would mean something to each of them personally.