Depending on the length of trip I recommend two or three projects that can be completed in under an hour or one long project that can be picked up and put down like an embroidery.
Separate your projects into bags, I put each of mine into glassine bags with all the materials I needed for each project in them. This way I didn't over pack.
Always take a notebook, I always come up with new ideas when I'm creating.
Keep the project simple, I save anything complicated to when I get home.
If you need some project ideas then I really recommend these.
Leather and Charm Bracelets
Rose Gold and Semi Precious Stone Earrings
Silver and Agate Ring
Most importantly where ever you go enjoy and save enough time to let your mind wander. x