How far are you traveling? If not to far what I have done is get some buckets from home depot they are 5 gallons and come with lids prob about 4 bucks. Put the fish in one of them and your gravel and filter media in another with tank water, supposing its only a 10 gallon. If you don't have enough for the fish then just declorinate some water and put them in that.
If your tank is cycled you want to keep the gravel and filter media wet. Then when you get home set up the tank first thing.
If your traveling for over 1 hour I would also use some sort of heating pad for the fish.