What are your Donut spending regrets...

I always enjoy this topic. My least favorite premium characters are BBM and Kearney - only because of the lack of visual tasks. I remember accidentally buying the hamster and then quickly logging into another device before it synced (that worked so it doesn't count!). I bought the stonecutters skin for frink which did absolutely nothing. Otherwise, no real regrets I dont think. Im premium, but not a completionist, so I'm pretty careful with my purchases.