Hey, LG, good to hear things are proceeding well for you.
A couple ideas.... First, any respectable sex toy boutique will have a little thing called a cock ring. They can explain it to you-- but I have been assured they can help with those "hide and seek" hard ons, especially the ones with the wee tiny batteries (like a watch battery).
You might want to check out adoringyou.com for some very cute little coupons... for acting out a fantasy, for a hard candy to be placed where you want to be licked, etc etc.
It's been a while, but I've always had good results with garters and stockings. Dunno why, it's so cliche, but it just seems to work. I favor wearing them under something pretty respectable and figuring a way for him to "discover" this in public.
Man, this makes me wish I had someone to wear stockings/buy toys/plan hot nights for/with. Deep sigh.
Never try to teach a pig to sing. It wastes your time, and annoys the pig.