Is it a grip or a strap?

[Unca Mikey]

Maybe I didn't use the right term?  LOL.  I am not sure if it's 
called a grip or a strap, but I am thinking of some sort of thingy 
that attaches to the right side of the camera body, between the strap 
eyelet on top and probably the tripod mount on the bottom.  That way 
you can insert your hand in the grip/strap and basically attach the 
camera to your hand, without having to hold it tightly.

I am browsing around in B&H and Adorama and see some possibilities, 
but would prefer to hear of any personal experience with these things.

I hope this makes a bit more sense, and thanks again for your help.

*>UncaMikey