Yup. They're called raisers. Take a look
Here. Or if that's not high enough you could go with something like
This. That's alittle pricey though. If that kind of height is what you're after then you might be better off getting a
Carry Handle (which you can get much cheaper in the classifieds then is listed in that link) and then using one of
These.
Kuro_Neko