Thunderbolt Splitter Recs

Does anyone have any good recommendations for a thunderbolt splitter for their dock. I'm most specifically NOT looking for an HDMI breakout adapter. I have a 15ft thunderbolt to HDMI 2.0 cable that runs into the back of my Hyperion hardware and I use it for both my laptop and my deck right now to great success -- but I would love to be able to charge the thing while I play instead of having to pick one or the other.