Looking for small active STEREO speakers I can throw in a carry on bag and travel with

I travel quite a bit for work as well, so I can sympathize. I don't think speakers is the way to go however... first, hotel rooms are notoriously noisy and thin-walled. I won't want to annoy the other guests with my music. Plus the size of packing speakers would mean that I would check a bag each time, which is such a time waster... I pack carry on only for anything less than 10 days.

 

I would highly recommend getting a good pair of headphones and a good DAC/headphone amp instead. Better sound and much more portable.

My son uses Genelec 8010A Studio Monitor for his mixing and they are very good for the size

https://www.amazon.com/Peachtree-Audio-Powered-Speakers-Bamboo/dp/B077VBZXDD/ref=sr_1_50?keywords=small%2Bpowered%2Bspeakers&qid=1644290640&sr=8-50&th=1 Spent 10 years contract traveling and working this problem. I was stationary for several weeks so would usually ship ahead to known address. That may well not be your dynamic.

cambridge soundworks mick fleetwood signature system

as good as it gets

Maybe a couple of Bluetooth speakers? Most are small and by definition are active. 
I use a single Rokform G-Rok speaker on the job and golf cart. You can use two from the same source not sure if you can get stereo performance out of them.