does anybody have any tips on how to spice up foreplay?

-Start teasing your partner some time before the act of sex. With secret touches under the table in public, or saying some naughty things in their ear. Perhaps a new toy, such as vibrating panties or similar, controlled by your partner could be fun.

Oh and a sexy/erotic game is definitely exciting! There could be tasks, or questions involved. Highly recommend.

Sex toys!

Try a different setting like starting on the couch or in the shower; slow it down and go back to kissing, etc instead of moving to "the next thing," try it with one of you naked and the other fully clothed; try different positions like sitting on the edge of the bed, spooning, straddling backwards instead of forwards