Colour and design seem to matter a lot to me. If the overall look of a toy is boring to me, I'm likely to not get it. Logically, I know the look shouldn't be what defines my purchases, but I'm a very visual person, so I like things that are pretty and different.
All of these pink and purple toys are so boring. I want toys that are green or teal or yellow. Purple -might- be okay if it were a certain dark shade.
I want the Tentacle simply because it's really pretty. The swirls, the detail; it's a gorgeous work of art. It looks entirely too thick for my preferences, but I want it.