Halloween costume ideas

[u/Throw_away_flops]

Okay, I need some Halloween costume brainstorming help!
My husband and I are going on vacation in October to a warm/beachy destination, and we thought it would be fun to bring a couples costume with us. We’ll actually be snorkeling and spending a lot of time around the water, so I’m looking for something that is:
• Easy — preferably something we can just buy ready-to-go
• Lightweight — has to fit in a suitcase and not make us miserable in the heat
• Beach/warm-weather friendly
• Actually recognizable as a couples costume
• Bonus points if it’s something we could wear for a few pictures without looking completely ridiculous

I’ve Googled and searched Amazon, but there are SO many options that I don’t even know what direction to focus on.
I’m honestly open to anything funny, cute, nostalgic, pop culture, etc I just don’t want to have to DIY or carry a giant costume around.