If you have the base plate for your tripod, with the screw attachment you can use a long piece of string as a makeshift tripod! Long enough to go from beneath one of your feet, loop through the ring on your base plate and back down to your other foot, with enough spare for it to be held tight by your own weight. Simply loop through, stand on the ends and pull tight.... Makes a great stabiliser for your camera and a lot less of a hassle to carry around. Maybe not quite as good as a tripod, but in an emergency and the absence of a convenient fence/table/wall/tree better than nothing ....
Failing that, you could loop the string over the base of your lens where it attaches to your camera, but not a great thing to do .... Enjoy your trip anyway ....