OtusLotus, you shouldn't have went there...but, since you did.
....Let's dig into this a bit further, shall we? Let's see....
1. Melted liquid copper, drizzled over various items and/or body parts (yummee).
And yes,there is the $1000 ice cream dessert that is served in NYC which includes edible flakes of gold, but remember, we are talking copper here...hehe.
2. You could also tie each other up with either Tinned Copper Wire or Television Earthing Wire (bondage?).
3. If you could get 2 or 3 tubes of stacked copper pennies (or other solid copper) to stick together lengthwise, you could make some sort of phallic symbol/shape and you won't have to buy any 'toys'
(although sadly, it won't vibrate).
4. Copper teets (WTF?) Umm...not sure where to go with that one.
5. Then there is the copper bum plug.
Just imagine, this one has possibilities for either person (or both of you!).
Yes, they make it, and no, I won't provide the link here, since this forum can be considered family-friendly, PG,PG-13 etc. Just google it; there's lots of websites to choose from. Enjoy.
6. Copper Cookware. There are advantages to this, but I just don't know how a couple could incorporate it into some 'fun' . Here's an educational link that's actually very interesting (G-rated):
http://ezinearticles.com/?The-Advantage ... id=3611906 And lastly, in case anyone was wondering, copper is 100% recyclable.