Liliput A5, a 5" HDMI pass through monitor for only US$149!!
 

Just finished my a weekend of shooting with the Liliput A5 for the first time, and I really liked it! Was a nice screen (in fact the B cam would often be using it for himself! Rather than for its purpose: to be pointed at me, so I could keep an eye on the B Cam shots), seemed to be battery efficient (I think? I wasn't doing battery management though, that was B Cam AC's job) while being super small and lightweight.

For its price (only US$149!) I think this was an awesome bargain buy.