I was walking around at All Electronics store in Van Nuys, California last week and saw them selling USB Logitec 2 button mouse for $3.50 each.
I throught that was good price for a USB mouse and picked up one to take a look at. To my surprise, the mouse got a I-Opener logo printed on it.
If you are looking for a mouse which goes with your I-Opener, this will be it, although it's just a normal USB mouse other than the logo.
Here is a link if you need to order online.
(I did a search with 'I-Opener Mouse' & 'Logitec', and did not find any previous post)