Extracted arbitrary from a list of suggestions by a fellow who calls living as a puppy “very loving and affectionate form of BDSM play.”
CBT – when down on your paws and have some ball weights or other CBT device on that stretches you, you suddenly become very aware of them as you walk along. Highly recommended once you get more into it and want to behave more pup like.
Kneepads – these are vital if your pup spends much time on all fours, especially if on the concrete floor of a club or playroom. Bear in mind they’re not normally designed for constant use on the knees and can bunch up round the back of the leg. Good types to look for are volleyball gel ones (for smaller pups), BMX biker ones with a hinged section and also ones designed for carpet & tile fitters you get in DIY stores.