Well, There were some recommanded EVOD and the like. I'm not sure if "cartomizers " are a good choice as they require some working knowledge. It takes a while for you to be proficient with them. That being said you can check out this! fasttech.com/products/0/10004634/1356900-ce5-electronic-cigarettes-round-mouth-atomizer-5
I would suggest getting the EVOD and the like [They're easy to fill, reliable and very easy to replace the heads and rebuild them if/when you are ready. Such similer devices but different looks are as follows : EVOD, MT4, T3, T32, T3s, T4, X6S , REM, V2 , KWX6 , X9 Protank, Protank 2, Protankmini, KWX5, PURITANK, Davide Mini Glassomizer etc. ]Pick up any of the listed devices and a few replacement heads (heating coils) for easy consistent vap.
All of these are BCC, and they travel well. Just fill a few - drop them into zip lock bag and you are all set. Carrying a few small bottles of eliquid is also no problems.
I travel with protank mini knock-off (not glass), a few extra heating coils, small bottles of eliquid.