Things that will drive him crazy??

I’ve been with my boyfriend for 3 years now and we are active quite regularly. He loves when I give him blowjobs and get really sloppy with it, and sex is always good, but I want to step it up and drive him absolutely insane. Any tips or ideas?? Also, what are some good positions for the both of us to get the most pleasure. We’ve tried 69, but I am 5’3 and he’s 6’4, making positions like this and standing sex a little tricky. I just wanna make my man feel especially good, and feel good while doing it. I know you ladies certainly know what you’re doing. ;)