Well I would not want to have those two things with me, because one I'm not interested in prescription pills and two I've never even heard of klonopin. What's the best way to calm a bad trip without taking something else? I guess the next trip will have to be out doors. Oh and about the spring thing I live in Australia so it's summer right now
benzos are just good to have around because it is medication made to combat anxiety, they work on GABA receptors. In a pinch alcohol will help calm down a trip as well, but it is not really as effective.
As far as non drug ways to help alleviate a bad trip. Before you take anything write on a sheet of paper something along the lines of "I took LSD, it is making me feel this way, i will be back to normal by sunrise. Everything will be alright" assuming your tripping at night, you could do sunset for a day trip.
I like the sunrise/sunset thing because time in the idea of a physical clock really ceases to have meaning. I have closed my eyes for what seemed like hours only to open them and see that 2 minutes have passed on the clock. The sun always rises and sets, it has to happen eventually; unless of course you live in some crazy part of the world where it is dark for days/weeks at a time...
The idea is that if you start to freak out, anyone could tell you that you ate some drugs and its causing you to feel this way, but you might not believe them. Seeing this in your own handwriting and knowing you wrote it is far more believable to a person.
If you get into some unpleasant thoughts you can use the scatterbrainedness of tripping to your advantage. Hold your thumb and index finger apart and try to figure out exactly how much distance is between them. Try to overthink it. "Well, i know it is about 6 inches. What really makes up an inch though, its a stupid system of measurement. Metric would be a better idea. I have no idea how many centimeters are in 6 inches. *goes on hunt for ruler*" then you find a ruler and figure out the answer to the question. Odds are good at some point your going to either forget the original question or you have put so much effort into answering the question that the thing that was bothering you is a thousand thoughts behind you.
Its all about finding a benign question that you can put a little bit of effort into figuring out.
Or put on some upbeat music and start to color. Sgt. Pepper's Lonely Heats Club Band is a good beatles album for an acid trip. Stay away from the white album. Revolution number 9 laying in a dark room was a headfucking.
Nature is beautiful while your tripping, going for a walk feels like constantly walking into a painting.
Trip with someone else. Its great having someone on your level to talk to. Sober people just don't seem to get it.