SOMETHING NEW..?

I know for a fact my boyfriend isn't bored of our sex. It's so good. For both of us! But the thing is he is away for college so we see eachother only of weekends... We've done like so many positions and had sex in a lot of places. 
I just want to surprise him and do something new?? Just not sure what there would be to do..? I mean I could look shit up lol but just want to know y'all's suggestions first! Thank you! 
Please comment with ideas/suggestions. I'd appreciate it!