After the inauguration of late night weekend T service I cobbled together a quick web site as a convenient portal to find out when the last trip of the night would be passing nearby. I didn't get a chance to polish the interface until this month, but now I think it is usable enough for others to try out. Point your browser, desktop or mobile, at tinyurl.com/lastmbta. If you are on a mobile GPS-enabled phone, then it will attempt to pinpoint your location automatically. Or you can just click or tap a location on the map:
Press the "Submit" button and you will get an easily printable screen that lays out the options:
I hope it is useful. Feedback is welcome.