I really only have two toys for me, a fleshlight and a silicone ring. They are seldom used. The first time I used the fleshlight, we tried it was together. I think my wife was really curious and to my surprise it was fun, but she has not mentioned it again, and I haven't felt like bringing it out. So, it is maybe a once every other month alone time toy.
I have been buying toys for her for a while now, and to be honest, it seems like her interest in them goes down by each year. Funny thing is, the toys are getting higher quality. I started with just a slimline vibe, then a jelly. I know better now. Next I thought it would be hot to watch her play with dildos that bordered just on the edge of large. At first it seemed like it turned her on, but every time following the enjoyment dropped. The hitachi wand I bought almost never gets used. I have tried to find a few beginner anal toys for her, and she hasn't really wanted to get into it.
The only things we seem to play with are a Tantus Acute and Curve with a clit vibe. Actually, the vibe is the only thing it really seems like she enjoys. The others I believe are as much a show for me. I would like to be wrong, but I'm almost certain she doesn't use any of them alone. Hard to complain if she is happy with me. Still, it turns me on fantasizing about her getting herself off with toys.