Try to get her to go to an Ann Summers shop, my wife was happy for me to go on my own, but wouldn't come in with me. When she did she had a bit of a laugh in there.
The front of the shop is usually just lingerie, the "toys" are at the back, so she wouldn't have to venture down there if she didn't want to
We have got a Fukuoku massage glove, which is a glove with five small vibrators in the fingers and thumb, this could be a good thing to start with, cost about �25.