I have occasionally used maps and miniatures approach, but quite often I do not. In recent years, rather than miniatures, I've switched to free paper miniatures which I download (and modify in Paint) from juniorgeneral.com (such as
these). I print them on card stock and tape them to 1" slotted wooden hex bases from
Litko. For maps, I use colored rolls of
http://www.gamingpaper.com/index.php. Paper building miniature sets from W23 or Drivethrurpg are great, but I also just small boxes, wooden blocks, etc. for terrain. If I need something specific, I make it with air dried clay, or draw it on the gaming paper.
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Buy
my stuff on E23.
My GURPS blog,
Dark Journeys, is
here.
My D&D blog, Grappling Hook, is
here.
Fav Blogs: Doug Cole
here , C.R. Rice's
here, & Hans Christian Vortisch
here.