Here is a thought if you travel take a cooler and a small set up so that if you are out and about and you find one you can get it ...
I traveled (2 or so years ago) to ohio I took a cooler and a small filter for in the tank and a small 5 gallon heater (tested) when I went to the LFS
I found a cool sea horse (to replace one I lost ) I got him and took him to the hotel , the lid shut down so they did not know what it was :P I did opt for no house cleaning too , I bought 2 small pieces of live rock less than 5 bucks for the LR
and set up a "QT" in the hotel , when we left for home I emptied 1/2 the water and we set off on our journey .... Now if it is a multi day trip take another container to empty the H20 into to place it back in when not traveling , had I thought of it I would have used a garbage sack to tie off while driving and then opened it up again but ours was only a 1 day drive back home
so what I emptied out was fine . When I got home I dripped him right in the cooler and then clean and disenfected the cooler with some bleach and some dechlorinator let it sit in the sun and put away
This will give you time to look around and also your tank to settle down a bit too HTH