Here's what we looked at this week:

RTIC Outdoors' Halftime Water Cooler corrects the design flaws of the incumbent design.

This design for a space-saving, folding treadmill seems cool, but apparently there are reliability issues.

A startup says they've developed this wearable mouse, which covers two fingers and reads gestures.

The U.S. Air Force has successfully conducted tests of autonomous AI pilots flying Valkyrie drones. Safe to say there won't be a "Top Gun 3."

The Moccle bicycle, by designer Masateru Yasuda, has a carbon-fiber-infused plywood frame.

This striking DC 3 stool, by Brazilian furniture design studio Fahrer, was inspired by the structural ribs inside the wings of the Douglas DC-3 aircraft.

Cool tools: Tiny, pneumatic, handheld belt sanders for detail work.

Product designer Greg Maletic is curating an exhibition of vintage calculator designs.

Grassroots motorsports: Here's some hilarious footage from the British Lawn Mower Racing Championships. You can't believe how fast some of them go.

The upcoming Plastics Caps and Closures conference is temporarily offering free registration.

Image: Arshad Pooloo

In Japan, actually affordable 3D-Printed houses: Just $38,000!

From Switzerland: Public skateboard racks, by industrial designer Beat Karrer.

This Robo Chair, by industrial designer Luca Nichetto, was inspired by a Björk music video and Meccano toys.

This library table, designed/built circa 1820, transforms into a ladder to reach higher shelves.

The Fan Man, designed by Ueli Berger and Susi Berger-Wyss in 1977, is a man-shaped shelving unit.

This Keypad sofa, by architect/designer Alain Berteau, has transforming sections to allow different seating positions.

Adidas' connected ball technology will be used at the Women's World Cup Final.

This Detecool Mobile marker/pencil case, by Japanese stationery company Raymay, features a tilt-out stand.