Before teaching in school, I worked in several group homes for autistic and medically disabled folks...
Kids are kids. Read IEPs and 504s first for seating issues, then the fine points. Do a variety of projects, some messy, some neat, 2D and 3D, every kid will find their niche. Be ready to simplify, but also to challenge. Some kids will struggle making a line, others may surpass your own skills.
As soon as someone tells you not to do a certain kind of project for special needs kids, doubt that advice deeply. If they are ALL autistic, there may be a few true-isms, but even there, skill sets are broad.
If any come with an aide, USE THAT RESOURCE, they hate to be board too. If you work in a district that is "specials focused," the skills you use there will FULLY apply and help you deal with ANYTHING in public schools. I know I am a better teacher because of my years working in group homes, and their may be one in your local neighborhood. I highly recommend education majors in college seek out such jobs to help hone their skills.
Here's my one "true-ism" for specials: Treat them just like any other kid but be ready to modify to meet their specific needs... as we do with ALL our students.