SONOFF Smart USB Adapter with App & Alexa Control

Here is a smart gadget that turns your USB devices smarter. The SONOFF Smart USB Adapter has 5V output. It is about the size of a regular USB adapter but lets you control your connected devices with the eWeLink app. You will be able to put your devices on a schedule, share access with family, and turn off connected devices with your voice.

The device is compact enough to fit in your pocket. It has a flame-retardant, high resistant shell. You can get it for about $10 on sites like Banggood.