There are many great small shower stall ideas. People like to have showers, if even small ones, so that people have a place to get clean, even if someone else is using the master bathroom.
People tend to like wet rooms these days. These are ideal for small showers. They make the room look very open and like the shower is just part of the decor.
Other people already have enclosed shower stalls. They like to upgrade them though by adding tiling. The tiling is very trendy and gives the shower a unique look. Make sure to pair with with an clear door for maximum effect and visibility of the tiles.
For other small shower stall ideas, consult a designer. They can give good advice on small shower stall ideas at affordable rates. Look online and at home stores to get a sense about what type of showers are currently on the market.