One year for Valentine's Day I took the liberty of buying a box of cards like the kids pass out at school to their classmates. They were your typical cartoon character like SpongeBob or someone on them. I signed each one different and then placed them everywhere he'd be that day. It started with his coffee cup in the morning and ended 23 cards later with the tread mill he ran on after work, and finally on his pillow.
They drove him crazy. Not that that was my main objective but it added to the joy. He'd put on his coat and there would be another one, got in the car and one was in the rear window. I thought he was going to blow a fuse. He did say at one point that if he found one more he was going to...not for blog content. It was a great day.