What are some fun/kinky things to do with your partner?

Open her up with a speculum and see what's inside. Give her a mirror or take pictures for her.

Sex swing

Candle wax play

Report: ‘Bitcoin Family’ Ditches Hardware Wallets for Steel Seeds After Global Crypto Kidnapping Scare - Bitcoin.com News

Butt slapping as hard as they can take and enjoy.

Sex on the dining room table

Food play (sploshing) - including washing her off in the kitchen sink.

Americans Are Growing Less Interested in Buying Electric Vehicles, Study Says - Road & Track

Write your own sexy truth or dare card games.

Sex on the beach

Outdoor sex under the real stars

Do you want to have an XXX chat?

Mutual masturbation

Bite hard on a tough part of you partner's body, like their heel without breaking the skin. Endorphin rush

69

No. 2 Baseball comes up short against UTSA, 9-7 - University of Texas Athletics - University of Texas Athletics

Forced hydration. Drink water during sex until you lose bladder control.

Sex with other couples (or at least near them)

Hot tubs

Why do so many 18 to 29-year-old men struggle in dating?

Try different sex positions - Read and go through the Kama Sutra.

Induce squirting with the right techniques.

Long (hour or more) marathons

What is the most craziest dream you ever had?

Golden shower

Prostate massage.

Mutual massage which may or may not get erotic

Do people really never face any hidden costs or surprises with surgeries in countries with single-payer healthcare like the NHS?

Find porn or erotica that you both like.

Short (5 minutes or less) quickies

Take a sexy shower together. Soap makes pretty good anal lube and clean up is easy.

How can a native English speaker say "it was nice talking to you" in French without using that exact phrase?

Temporary body paint

Golden enema

Sex on a hard floor or rug rather than a soft bed

What made you recently say to yourself, “Wait. Really?”

Titty fuck

Sex club - watch, be watched or fully participate

Sex in a pool

A Cosmic Tech Mystery Results in Literal Lost Souls in This Sci-Fi Short Story - Gizmodo

Pregnancy play. Ask a woman who's stopped menstruating but wishes she could have more kids whether she wants a boy or a girl just before cumming inside her.

Fall asleep spooned up, coupled. Can you stay that way when you wake up?

Hair play. (Cowgirl, brushing her long hair over his skin and face)

Triple H: WWE bringing R-Truth back after backlash to departure is ‘all part of the show’ - Awful Announcing

Couples massage at a spa

New lingerie

Snowball - cum inside her vagina, go down on her and suck it out, and then kiss her and shove your own spunk in her mouth.

A child had measles at Mall of America, concerning state health officials who don’t know source - Star Tribune

Play sexy truth or dare card games.

Nude co-ed sauna. (Russian banya)

Take a sensual shower together. Rub your soapy body all over theirs.

Anal play

TENS unit - electro shock

Canibalism - eat a tiny piece of each other - typically a nip of you ass cheek. This may leave a small permanent mark, but it was in love.

Scented massage oils

A sexy walk in the park at night, when nobody else is around

Long distance hot video chat with mutual masturbation.

Mood lighting. Try a sega Homestar planetarium projector

Sex in public

“Rescue” sex - partner lets go and is about to do something dangerous but hold them back at the last second. This takes trust.

Meet other couples through a Lifestyle website.

Here is another list

Sex with good friends but not lovers. Keeping the balance is tricky.