FMF Positions

Me and partner are going to have a FMF threesome this weekend with a female play partner of ours, we want to mix it up to how they usually go and try get some positions that we haven’t tried previously, can anyone recommend any ‘out of the ordinary’ things we can do! - want to make it as crazy/fun and memorable as possible!

(No bog standard answers, E.g “Double Blowjob” , “Train” )