Trimming isn't what it was even 3 years ago. It isn't something you're going to grind at and make a killing. If you want to do it, go for it, but it's pretty much a normal job now and pays similarly.
A lot of friends do the rafting guide gig in the summer.
Cool works actually really does have some cool jobs. Everything from east coast to idaho, to alaska etc. Restaurant stuff, guiding things, all kinds of stuff.
If there's anything you can do for work online that can be good as you just need a decent wifi connection which can be found anywhere in the world, and you can work even if you're not supposed to be on whatever travel visa you have.
If you go abroad I'd say just save a bit of money and vacation it. You can get a job at a hostel for free accommodation and sometimes free food. Some places pay as well but don't bank on it. Some countries are super cheap, some countries are super expensive.
Google flights is great for playing with different dates, cities, airports and trying to find the cheapest way to move between places. Also trains are pretty solid in europe, and the train stations are more centrally located so you don't have to waste time/$ going way out of town to an airport, plus all the hassles that come with being at an airport. Busses are a good option some places. They can be shitty, but they can get you pretty far in areas that don't have much for trains or planes.
This is a great website and facebook account to follow. They post good deals on flights, and combo things together with hotels or hostels to give you a reference to either book, or use as a guide toward planning a trip. Maybe you weren't going to go to europe, but a $200 RT flight pops up. Maybe there's a 4 star all inclusive resort on some island on sale for 1/4 the price in the slow season.
But there's so much to do just in the states. A few years ago I spent a month camping in CO and mostly Utah in the desert. Did a lot of hiking, saw a bunch of stuff, spent very little $.
I also try and get out of the country as much as possible. Been doing the southern hem winter a bit, trying to do Australia the next 2. Eventually probably going to Europe to work there. Have had a job for a couple years but my work visa took too long and I'm trying to stack my resume in the states and then maybe give it another go next year.
If your parents, grandparents are from another country, see if you can get dual citizenship. I'm not able to but if I could get an EU passport even that would give you stupid amounts of options for working other places.
Mention to some of your friends that you're looking for random work opportunities and see what they find. There are always weird gigs popping up on CL and the facebook classified groups. My buddy in CO worked a bunch of bike and running events. Got paid 300 for the day or 2 of work each time. Wasn't something he was looking for, but saw it on CL and gave it a shot.
Being a bartender or server is a pretty good skill to have in the bag. Everybody drinks and eats, and there are always people leaving and people hiring. You could even pick up a couple days a week as a temp gig to fill in at a place, make a few $ get some drinks, and food.
Sorry for the scroll bomb. The world is your oyster. Send it. Try some new stuff, go some cool places, have yourself an adventure!