First of all, I recommend that you take Meclazine (Bonine, less drowsy dramamine). It helps tremendously with motion sickness. I get severe motion sickness without it. With it, I can ride pretty much everything except the most spinny of rides.
At IOA you can ride The High in the Sky Trolley, Cat in the Hat (spins a few times but not enough to cause sickness), Poseidan's Fury, Sinbad Show, Jurassic Discovery Centre, Ollivander's Wand Shop experience, Jurassic Park River Adventure, Spiderman, DUdley Do RIght Ripsaw Falls, Popeye and Bluto River raft ride.
At Universal you can ride Dispicable Me, Shrek, Twister, Disaster, ET, Animal Actors Show, Terminator, Transformers. Men in Black has a few spinny sections.
I would skip the Simpsons as well as the spinning flat rides unless rides such as Dumbo don't cause you issues.