Ends can be bought to seal up pipe. PVC pipe is not flexible. It is usually black and has small holes along its length. Flexible tubing for mice can be made from vacuum cleaner hose. Perhaps your local vacuum cleaner store can supply some or you may be able to find an old pipe.
Plastic tubing is usually easy to clean.
Grip in PVC piping may be made by buying the grip, used for boat decks, from a boat shop. This boat grip looks like sandpaper and is sticky on one side. It is waterproof as it is designed for boats and so should wash easily. Postpak tubes from your local post office form tough tubing. You can ask your local floor covering store .