How to Measure a Toy

When it comes to buying a rabbit toy, you could think about that. Like if you... It's kind of like, if you touch a clip, how many notches on your finger till you touch? But the thing is, is measuring, like, can the toy, if it's inserted? Because this is the stem and this would be the part. Once it's in, where is that gonna land? How long is that nub? So looking at those things, because if it's a really short nub, you'll be like, oh yeah, no, I need a little bit more length for that. Or if it's really flexible, they should like, oh