Intimacy that stays with you all day
Inscribe a sigil on your metamour's back in vinegar.
Drink a cup of tea and have a metamour tie the used tea bag to their body for a day.
Make bars of soap for your metamours to use.
Paint your metamours' nails while they are blindfolded.
Feel free to add your own...
Intimacy that stays with you all day
....the third and fourth sound nice at least?
What does vinegar do on skin?
Also, I'd hope the tea bag was dried out first? :-)