Definitely consider 12v
rope lights for next time. They're available in several colors, and cost about $1.00 per foot of length if you buy by the spool.
For a tent, you could run a rope light around the top of the tent wall, where the wall meets the roof, and secure it to the tent poles with cable ties.
You would want exterior-grade rope lights, which are 1/2-inch in diameter, and have one LED per inch of length. You can cut it at any point in between the LEDs, and just have to put an end cap over where you cut it. When buying by the spool, you'll probably have to buy end fittings separately, one fitting with power cord and one blank end fitting per cut rope light.
Most rope lights stay cool to the touch. White tends to get a little warm, but not hot enough to burn. For reasons too technical to go into here, white LEDs are made a little differently than other colors. All rope lights can develop hot spots where two ropes (or two different sections of the same rope) touch each other, so try to avoid that.
Best results come from using LEDs embedded in clear ropes, but you can also get them with colored ropes, too.