You can build a pretty cool basic weather station using the sensors on the Raspberry Pi sense hat.
How to build a Solar powered WiFi Weather Station with a Wemos board. The Wemos D1 Mini Pro have small form-factor and wide range of plug-and-play shields make it an ideal solution for quickly getting started with programming the ESP8266 SoC. It is an inexpensive way to build Internet Of things ( IoT ) and is Arduino compatible.
Coolest hide-a-bed ever! Sofa beds are great with their versatile functions. But even the best sofa bed has to bow down to this: the Doc Space Saving System, which converts from a regular couch to a two-level bunk bed.