I usually pack a recent deluxe with me on trips - Prime Vechicon, Scanning Ironhide, Nitro Bumblebee, Windcharger come to mind. Just something to fiddle with or take pics of if any downtime arises.

I am also playing with some of the flat bed trucks (DotM Megatron minus gun, Cyb Ldr OP minus jetpack) with my daughter. She uses them as cars for some GIJoe sized dolls she has. Every now and again I get to transform them but mostly the are driving around with princesses in the back.