Oh, I’ve definitely gone through the same dilemma! What helped me was focusing on mirrors that are compact but still have adjustable lighting so you can see clearly in any environment. I found a few great options here
https://www.luminapro.co/collections/portable-mirrors, and they work perfectly for travel because they fold flat and are lightweight. Personally, I like the ones with rechargeable batteries because I don’t have to worry about replacing tiny batteries while on the road. It’s also handy if you’re staying in places with unpredictable lighting, and the mirrors feel sturdy despite being portable. Overall, choosing one with a combination of foldable design, lighting, and light weight really makes traveling easier.