Those of you who have invested in cryptocurrencies in the past know that their prices go up and down drastically at times. You can always build a display to help you monitor the prices to take action faster. This $10 Cryptocurrency Display project is based on an ESP8266 based microcontroller. You are going to need an OLED display and cables to complete this project.
You may be able to get all these parts for about $10 but in reality, you are looking at a price closer to $30. The instructions are available here.