When it detects motion, it lights up and starts recording to an SD card.

I also liked Dawn A. greeting card strategy and think I may try that too!

I was thinking a gift card to a nice restaurant, but I'd really like to give him some kind of business tool or planner as I know this business keeps him going and to make his life simple.

I would join a couple REIA clubs and then start passing out business cards.

Pounding the pavement, passing out cards, networking with real estate professionals, etc...

Make business cards and hand the out until everyone knows what you do.

I've read that hand writing is best, red ink, yellow letters, hand stamped, and card envelopes as opposed to #10 letter.

Someone had posted on a related thread, that raising the rent is a less bitter pill to swallow when accompanied by a small token of appreciation to the tenant - a $50 gift card for example.

That must be north of $25K in credit card debt (you said revolving).

They are borrowing, maxing out credit cards, selling their soul to get a house just so they will get back 8k.