WiFi + Bluetooth

Your best bet is to use one of the Bluetooth devices and to add WiFi to it - generally you'd use an ESP8266 module which handles all the TCP/IP and communicates via Serial.

• Pixl.js is easiest and you can just plug it right into a WiFi shield: https://www.espruino.com/arduino-esp8266
  
• MDBT42Q breakout can be plugged in to something like an ESP8266 ESP01 pretty easily: https://www.espruino.com/ESP8266
  
• Even Puck.js can be plugged into ESP8266, but then you have to worry about how to supply power to the ESP8266
  
  

Hope that helps!