If you want flexibility then check out my dos, don'ts, and sometimes post to see what I like. I'm in general quite flexible.
But if you want to really make a 'vee smile then I'd love to see something involving (in order of preference) Pouch Vore, Genital Vore, Tail Vore, Anal Vore, or Oral Vore featuring pretty much anything for pred/prey but I have a bit of an interest for eeveelutions, marsupials, dogs, cats, horses, humans, and human-like creatures at the moment so anything along those lines, especially in combination, are all good! ^-^