>>33333568 (OP)Some ideas;
-Go to a concert (good alone, with strangers, or if you want to meet people. the later requires effort on your part).
-Go to a state fair (ride the rides and talk to people next to you in line).
-Go to a rollerskating rink. Get good enough to do some minor tricks. Talk to people there who can do better tricks about how to do better tricks. Therefore make friends.
-Learn to skateboard, go to skate park. Rest is similar to rollerskating, above.
-Run a marathon or half-marathon.
-Join a [fill in the blank] autism club; like a train or gem/mineral collecting autism club.
-Take a community college class that inherently has interaction between classmates. Examples: auto shop, woodshop, geology field trip classes, etc.
-Go to church or some other religious group.
-Take group horse riding lessons.
-Take a martial arts class. Jujitsu works best for making friends, but others work too. Suggestion: find a school that has a smaller number of very dedicated students. That makes for a tight and strong friendship circle.
-Intramural sports: similar to the martial arts suggestion
-If you can play an instrument, consider taking a community college band class of some kind.
-Join a sailing club. Even if you don't know anything, they will help you.
-Join a yoga group.
-Take ballet classes. You'd be surprised. Even if ypu haven't done it before, a lot of dance studious would be happy to have a male in the class since they are so rare. Bonus: you get to touch women.
Yeah, some of these require you to spend some money, but others don't. In any case any activity you do, even with strangers, requires some effort to go outside of your comfort zone.