While it is tempting to be a swimsuit and get a seriously intimate feel of some woman's body, and you are a shapeshifting perv, it also seems like too much of an intrusion. You'd rather have a woman know you're her swimsuit the first time you try that, to see if the idea of wearing a person transformed is as interesting to her as the thought is to you. But you also like women's feet and flip flops are a common item to be sold and bought in a water park gift shop, so you shrink down even smaller, the size of a flea and fly into the store room, finding a case of pink plastic flip flops and you turn into another pair, even slipping yourself onto a plastic hook. This is going to take a while, since you are in the back room, so you spend the time trying to think like a flip flop would, getting used to being an object for longer, trying to embrace it.
It works maybe a little too well, because when hands grab you out of the box to put on display, the store has greatly changed. Disoriented you try to get your mind back on track, examining what you can from your perspective. A calendar on the wall confirms it: you were boxed up the whole off season, and its been almost ten months since you transformed! After a bit of panic about the idea of your human life being absent that long, you realize this is actually perfect, since your ability lets you become anything, your fetish is becoming things and being used as them, well.... you're a thing now. Turning back to your human self would be problematic, but then again, why would you want to? So you settle in, and after a few weeks a cute blonde woman, in her 20s probably, buys you and slips you on her feet as she walks around the park. Getting to a chaise lounge, she slips you back off, under the chair and sunbathes for some time, unaware her new flip flops are a sentient being. She gets up and goes swimming, and you wind up laying there for several hours, heating up in the warm sun, before she comes back and lays out to dry off, before slipping you on to head home.
She slips out of you while driving, but arrives at a nice condo building, and goes in, tossing you off at the door and going to shower in the bathroom. Now that you have a new owner, the question becomes do you stay as flip flops, however long she keeps you or turn into something to reveal yourself to her? Now that you have been an object for such a long time, either option is equally intriguing. To shapeshift or not?