Clever Solutions for Small Bathroom Spaces: Using movable & FoldingTowel RackShelf withRobe Hooksto improve your bathroom space. Even a little extratowel shelfspace can make a big difference in a small bathroom. Putting up a large cumbersome shelf will only make the bathroom look smaller, so keep shelving as light and airy as possible in a small bathroom. Before putting up a towel rail shelf, make sure its presence does not act as a visual room divider. Because traditional shelves might be too big for a small bathroom, you may need to look to other items for bathroom shelving ideas.