If your set-top box isn't quite router-like enough for you, there's the antenna-toting Orion R28 from Tronsmart, an Android TV Box that is now available for pre-order. Two models are available currently, with a third one being in the pipeline, all of them offering Android 4.4.
Two models, one featuring 8GB of internal storage and one featuring 16GB, are available for pre-order at $80 and $100, respectively. With either model you'll get 2GB of RAM alongside a Rockchip RK3288 ARM Cortex-A17 processor and Mali T764 quad-core GPU.
There's a wide enough array of features that you could use the Orion R28 as a mini computer, if you wanted. There's Bluetooth 4.0, 802.11ac WiFi, microSD support, Gigabit Ethernet, infrared sensor, and the ability to play up to 4K video (assuming your TV or monitor supports it).
At some point in the future, a model offering 4GB of memory will also be launched, though it isn't presently available for pre-order. Rounding out the features is support for H.265 for users with slow Internet connections.