Larger than a hot tub but too small for swimming laps, petite pools are particularly popular in areas with micro-yards, whether due to real-estate prices, tiny lots or both.

This pool won’t overwhelm a small yard, and even the largest size is under $250. This pool doesn’t have a pump, so you have to clean it and toss in a floating chlorine dispenser to keep the ...

This round pool is just 2 1/2 feet deep and 8 feet in diameter, so it’s ideal for small yards or people with young swimmers.

A woman relaxes in her backyard spool, a combination of a spa and pool. (Getty Images) This 3D image represents the spool that was built by Desert Springs Pools & Spas. (Desert Springs Pools & Spas) ...