The ladies room I clean up in has the sink directly in view of the office area if the door is opened! I just shampoo (decently clothed) in the sink, then fill a small bucket with clean water to finish scrubbing the rest of me in the handi-stall for privacy. I use a small amount of liquid anti-bacterial soap on a microfiber washrag, and scrub myself to remove sweat and road grit; then I use the clear water bucket to rinse the rag out and wipe-rinse myself. My travel towel is a beach towel-sized, microfiber travel towel that folds up very small and dries quickly. It is actually faster to do this birdbath cleanup than deal with walking to the remote shower/lockerroom at my previous office location. There is a storage room next to the ladies room where I hid my cleanup kit.

I couldn't get the link to the rocket shower to work.