Early 2015 MacBook Air and two external monitors: how to do it and maximum resolution? I have an Early 2015 13" MacBook Air with Intel HD Graphics 6000 1536 MB. I'm trying to figure out what its capabilities are in terms of connecting two external monitors.

First, if I just used the two external monitors and did not use the MacBook Air's built-in monitor, what is the maximum resolution I could run both external monitors at simultaneously? For example, could they both do 1080p resolution, or perhaps higher? And does it matter whether I use the built-in monitor? (I've scoured the internet looking for information about this but haven't found anything so far!)

Second, is there a device I can use just for connecting two external monitors via DVI, HDMI, or DisplayPort to the MacBook Air's Thunderbolt 2 port, other than an expensive general purpose Thunderbolt 2 dock like one of these? I should add that I'm not interested in using devices that connect to a USB 3 port and use a DisplayLink driver.
Just for posterity I'll answer my own question:

After doing quite a bit of searching around, I eventually figured out that the easiest and cheapest way to accomplish this would be to use the StarTech brand Thunderbolt 2 Dual-Monitor Docking Station. Even with a MacBook Air, you can still plug in two external monitors simultaneously. I found reports that it works as advertised. Note that I have not purchased one and tried it myself, though.