ASU2003

Don't they sell toys that don't look like sex toys? Have you tried veggies hair brush handles or other objects yet? Or are you going for the clitoris vibrator style? Those can be smaller and hidden better.

I hope you don't scream too loudly the first time you use it. I think it would be more embarrassing to get caught while using it than even if she found it hiding someplace.

(and don't hide it in old clothes, my Mom was notorious for cleaning out old clothes and getting rid of them while everyone was out of the house so no one would complain and say something had to stay.)
My suggestion would be to get a book that would fit in with other books on a bookshelf (if you have books). Cut out the inside of pages to make space to put this in there. Use some glue on the inside to hold it together, and put some velcro on the cover. Put some padding inside so it doesn't rattle around and feels like a book.