Still one of my favourite treats as well!
You would probably have to watch some tedious and awful stuff before you find the right thing but you could google it for some helpful (porn) videos, make sure you anti-virus is on tho. I agree with the comment above, ignore his cock and tease everywhere until he’s begging you to finish him off, and still ignore him!
Personally for me ice cubes don’t cut it, especially on my cock, but maybe worth a try. I like massage oil. Feathers are OK but if you have nails, gently drawing your nails or fingertips down his arms, across his chest, up his inner thighs. Eventually across his balls and along the shaft.
Lower your nipples to his lips, but don’t let him suck them; likewise lower your fanny to his face, let him smell you, possibly a quick lick. You’re teasing him remember, don’t give him too much yet.
You don’t say how many pairs of handcuffs you have or what anchor points you have but try and tie him down spread-eagled like a starfish. Also consider headphones/earphones with music playing and a scented candle, then he won’t even know if you are in the room*, you can tease then leave; or sit and watch him wriggle. Video it with code ups of his twitching cock, and play it back later - but don't share it!!
*Download a sexy audio book story instead of music, or instead of the headphones, if there’s a TV in the room put a porn movie on, or on a laptop. You don’t have to watch it yourself if it’s not your thing, just let him hear the sounds. Or if you can find a audio book story involving a man being tied down and teased, play it so you can both hear and act along with it.
** I was once tied down for a few hours and she would keep leaving me alone for long spells; at one point she came into the bedroom and lit a cigarette and smoked it, blowing the smoke my way but not letting me have a puff. Bitch! 
You could do with knowing if he can get more than one stiffie and ejaculation in a session and what his recovery time is; and will the second or third one be stiff enough for some PIV so you get your reward. Is it going to be a 20 minute jobbie or 3 or 4 hours?
It may be possible when you eventually turn your attention to his cock you can make him come without actually wanking or sucking it - gently lick along the shaft, or drag your nails or finger tips along it. Pour some massage oil on his bell-end and gently rub it with your thumb and finger. Rub your fanny along it, push the opening against his bell-end but don’t let him lift his hips and push it in.
You don’t need to decide in advance but eventually you will have to decide what the ultimate treat is – tease his bell-end till he comes, hand job, blow job, 69er, girl on top. Or to be an ultimate tease remove the blindfold, untie his wanking hand and put on a show, strip-tease, masturbate yourself, sit nearly on his face, etc, let him pleasure himself as he watches.
if you want some practice, here's my number 