Flying tips

We have a few trips planned this summer, two of which will be flying. Neither are super long flights (one is 2 hours, the other is 3.5). We’ve flown with our LO (little one) 3 times already, I am just a little concerned about this next one coming up because I’ll be by myself and he doesn’t like to sit still now. I’m hoping he will nap but we all know how that goes! Any advice for ideas of things for him to do on the plane would be great! I do plan to bring an iPad although he’s not very interested in tv. Thanks!