Let me introduce you to my new travel companion. It's joined the shine-absorbing sheets and hand cream in my little bag, and will be staying there.
I bought my sister a Travalo for her birthday, and added another to my basket at the same time (one for you, one for me). I've never felt like a travel atomiser was missing from my life, but thought it looked pretty handy. Well, I've been using this little gadget for about a month now, and I love it. It's easy to fill, doesn't leak, has a fine mist, and saves room. This particular colour is pretty, too. It's described as light pink, but it has that metallic finish to it.
I know some people don't like the idea of scents mixing when changing them over, but I've actually been purposefully mixing a couple of mine, with great results. The majority of my perfumes are in the same scent category, so go well together. You could always buy a couple to avoid any mixing, though.
A Travalo is usually around £12, but I bought ours from this eBay listing for around £6, and Fragrance Direct have them here for £6.99. There are plenty of non-branded ones available for a couple pounds, though. I only bought from Travalo because one of them was a present, and they come in a little case perfect for this occasion. I'm just hoping it doesn't begin to leak over time. I'll be sure to let you know!