Making a Paper Prototype - Paper Prototyping: The Fast and Easy Way to Define and Refine User Interfaces - page 56

and she notes that they attract a lot of positive attention at her company.
Supplies I Don't Use
There are a few items I generally don't use in the paper prototype itself, although I sometimes use them
in related activities with the product team.
Sticky (e.g., Post-It) notes. They don't lie flat after they've been moved a few times, so I avoid
using them in prototypes. I prefer card stock and restickable glue, which essentially lets you turn
anything into a sticky note. Sticky notes are often useful in group exercises (such as prioritizing the
results from usability testing), however, and if they help you be creative, by all means use them.
Flip chart paper. Although I suggest making paper prototypes larger than life, flip chart paper is
probably too big. A colleague of mine tried it and reported that users couldn't see the whole
interface without moving their heads, which introduced artificial confusion. On the other hand, flip
chart paper is great for scribbling design ideas, making to-do lists for the team, and so on.
A ruler. Straight lines usually aren't important for a hand-drawn paper prototype. When I was at
User Interface Engineering, we used to include rulers in our paper prototyping supply kits, but we
found that they encouraged people to waste time by making their prototypes overly neat. I advise
using a ruler only if exact alignment is important, and if alignment is truly that important, the
interface should probably be rendered using software instead of being hand-drawn.
Fine-tip pencils or pens. Fine lines are difficult for observers to read, so don't use fine-tip writing
instruments to create your prototype. If you feel uncomfortable working in pen because it can't be
erased, pencil is okay for your earliest drafts, but then draw them in marker before testing them
with users.
Laminator. I've heard of people who laminated their prototype pieces to make them sturdier and/or
so users could write on them with a wet-erase pen. A fine idea if you happen to have a laminator
handy, but I wouldn't buy one just for this purpose. One drawback is that you can't alter a laminated
piece as easily as paper—removable tape works, but correction fluid doesn't.