Meet the Sengled Boost: a dimmable LED bulb that also serves as a WiFi repeater. It has two WiFi network modes: Client and Access Point. The device has two antennas to offer you a data exchange rate of up to 300Mbps. The Boost works with most smartphones, tablets, and devices that support wireless N connectivity.
You can use the companion app to control the lights individually or as a group. Sets you back under $50 at this time.