IDEA 1: If your partner is going away for a few days, tell her that you are worried about her so you have organized a bodyguard to look after her. Then give her a small teddy bear.
IDEA 2: Buy a packet of glow in the dark stars and stick the stars on the roof above your bed to spell out a message such as "I Love You" When the lights go down, your message will be revealed!
IDEA 3: On a special occasion, buy your partner eleven real red roses and one artificial red rose. Place the artificial rose in the center of the bouquet.
Attach a card that says:
I will love you until the last rose fades.
and many many more...