Laura What exactly do you mean by that? If you are referring to something cheaply-made, there are plenty of very fancy toys in this world and plenty of very shoddy tools. So using the word toy to indicate workmanship is dubious.
On the other hand, if you mean "something to be used for fun", then what is a toy and what is a tool depends less on the device itself and more on how you use it. The same chastity devices are used for use in erotic denial and in protection from unwanted sex of any kind. So the device might have been a toy in the hands of Avery's mom, but not Avery herself.