This is a practical arts-n-crafts post. It assume you're already familiar with Anne's landmark, hidden, secret terminology (though pedants will note I take some liberties in translating it across media.)
Start by folding a piece of printer paper in half, hotdog-style. This piece of paper will represent one wilderness hex. On the left half, write the "hidden" parts that adventurers will discover if they spend a watch looking through it. On the right half, write anything that they wouldn't.
Fold over the secret side like a second hot dog and seal it with a little bit of easily-removed scotch tape. Then double fold the other side the same way. Then make a little orgami hexagon from it, like so:
On the complex side, draw your landmark information - information everybody gets just by passing through. Here I've indicated that this is a coniferous forest with a river running through it, that it takes 2 movement points to get through, and that it's hex A1.
I like to think these slot together pretty nicely, even with my total lack of manual dexterity! Have them start on the blank side and get turned over when players enter them, or even add features with a pen that are visible from afar, like mountains and sometimes rivers.
