If a thing is difficult to classify, because it's not really a dildo or a vibrator, then that's the thing that has my instant attention. For example, the Sasi, or the Sqweel 2. I have plenty of nice vibrators and dildos, so now I'm looking for those elusive unique sensations that come from the "other" category.
I have never thought about having a different wishlist for different items. Great idea that I will now use myself. As far as my wishlist goes, I would say the majority of it is filled with vibrators, then lingerie, next would be dildos and final would be lubricants.