You might want to consider putting a cap on one end, or placing an end so that it's relatively blocked off - that way your monster will feel safer from monsters 
Also, a way to improve the look of a pipe is to coat it with epoxy resin, then sprinkle sand over it - or glitter, if thats your thing
Also, a way to improve the look of a pipe is to coat it with epoxy resin, then sprinkle sand over it - or glitter, if thats your thing