Allow me to talk about one of the things I know a lot about; bringing a tabletop session alive with amazing maps.
First, find yourself some awesome maps. I'll shamelessly plug my own kickstarter for Roleplaying Maps by Arcknight. They are awesome, I suggest you check them out, but it could be any maps you wish.
Second, dish out the ~$16.00 for an 11x17 Art Portfolio. I've purchased and tested about 6 different types, and this one is by far the best:
Itoya IA1212 Art Portfolio (11x17)
Put your maps in your portfolio in a manner that lets you 'turn the page' to any battle scenario you wish. Clearly for best results you want 2x maps that are 11x17 and designed to fit together.
This Art Portfolio was not specifically designed to be Dry Erase, but with high quality dry erase markers you can draw all over your maps(and erase) as long as you don't leave the markings overnight.
No matter what the packaging on your markers says, test whether they erase on the corner of your Art Portfolio.
You can thank me later.