I have this 3-in-1 adapter that my old roommate left. It looks identical to this:
http://smile.amazon.com/Display-Converter-Adapter-Surface-Makibes/dp/B00KXTDSGQ/ref=sr_1_4?ie=UTF8&qid=1415509335&sr=8-4&keywords=mini+displayport+to+vga+hdmi+3+in+1

It worked the last time I used it though I don't have anything to try it out with anymore. It should work with MacBooks, Surface Pro, etc.
I'm selling it for $5 and if it ends up not working, you can bring it back and I'll refund your $5.