Depending on where you live, you may be able to participate in Autism research. If you have a local university, check if there's an autism research lab. If you don't, some studies collect data online. You may need to be in the same country as the lab. Try Googling "participate in autism research [country]." Some studies require a diagnosis, some don't. You may be reimbursed for your time, so this can be a way to earn a bit of money. You might even get to meet an autistic researcher! :)