This is blast from the past but still a good tip. While I made this video a long time ago, to this day, I dry my Platypuses (Platpus, Platypi?) using this simple technique after every trip. It's definitely not the best video I've made but enjoy (or "endure" as the case may be).
I forgot to mention in the video that you can also hook up your hydration tube to the aquarium pump nozzle (one of the trickiest components to dry out quickly). What's your method for drying out hydration bladders, tubes, water bottles, etc. What tricks do you have up your sleeve?