Struggle to keep a rhythm? Could do with a distraction so you get an extra 30 seconds? Slap one of my nutty Sex Aids on the headboard or bedside cabinet, just make sure your movements can effect the heads of the Sex Aids and focus on keeping eye contact with the animal of your choosing whilst slipping one up your partner. As long as you keep their head bobbing at the same rate you're probably doing better than you think you are.
These seem to be made from carved out nuts so in a way that makes them Vegan Taxidermy.