I ordered two Ham-micks from Forty Paws for Lucy and Ringo's birthdays. I put one downstairs and one upstairs. I didn't have to wait long for Benny to find one. . .
. . and then the other.
Ringo likes them too.
So far, Lucy is a bit afraid of them. I've been playing near them to get her to approach and touch them. Maybe in time she'll come around. But for now, the boys are happy to have them.