Flexible and portable, this hanging hot tub hammock can be suspended from trees or other supports or tucked into scooped-out depressions along sandy beaches or on snowy mountainsides, compact enough to be checked on a plane with its associated portable heating unit.

The highly-mobile Hydro Hammock requires only 20 gallons (less than half of a typical bathtub and supports use by two adults to be used as a hot tub and can be used to line existing voids or suspended in midair. An accompanying device pumps water from wherever it is available and heats it electrically along the way – an eventual goal for future models is to use solar heat so no batteries or other external power source will be required. The extra-durable, high-tensile-strength material supports up to 700 pounds and its canvass-like surfaces give it traction for users.

Aside from its core function as a hot tub, the heavy-duty fabric and associated pump can be reconfigured to turn the system into an outdoor shower or left empty and simply used as a traditional hammock. Its primary target audience, however, is people who wish to have a retreat from extreme environments, taking a hot (and optionally: bubble-filled) vessel with them for breaks from cold ocean waters in the summer or freezing outdoor temperatures in the winter.

More from its makers: “Durable and portable hammocks ready for soothing hot or cool refreshing water. Relax, rejuvenate and fully stretch out in comfort beyond the constraints of an iron or fiberglass bathtub. Equipped with a portable water heater system, LPG or electric. Hydro Hammocks require less water than bathtubs and have a slip resistant texture. The shapes are adjustable and are easy to set up either fully or partially suspended.”

Transforming an outdoor recreational space into an interactive evening wonderland, this series of variously-sized swings (and accompanying activities) encourages playful nighttime interactions.

Designed by Howler + Yoon Architecture (images by John Horner Photography) and located at Lawn on D in Boston, the focal point of the installation is the set of round hammocks filled with LEDs that change color as you sit on, swing or spin them.

The lights use customized micro-controllers, converting motion into changes in hue and luminosity, starting as a standard white by default. Also on offer: free wireless internet and various backyard-type ball games.

The swings come in three sizes and are set to be on display (and open to the public for play) through November, but it might be best to enjoy them now while the summer weather still lingers. But don’t worry: rain or snow, they will leave a light on.