Mizuki – if they’ve converted enough other guys, they already got the gay toaster oven! ;)
I kid, I kid.
Seriously, though, just about anything you’d get for a straight couple would work for a gay wedding gift. They’re very similar in terms of still needing to cook, entertain themselves, and do stuff around the house as other couples. All of the ideas listed above are great.
Do they do anything together, like enjoy sports games or similar events for which you could buy them tickets? That’s another idea – an experience. If they already live together, there’s a good chance that they may already have two of everything. However, if they’ve registered somewhere, that would also give a clue as to the sorts of things they would enjoy. Whatever you give, I’m sure they’ll love it!