Traditional 2D animation requires some way to align one drawing over another. Animation peg bars are the standard method. This instructable is a simple (cheap) solution.
11"x14" plexiglass sheet $2.19,
1/4" dowel pins $1.97,
12" Wooden ruler (with 1/4" holes)
a rubber band
knife / sand paper
Click for light box instructable
Step 1: Peg Bar Assembly
Center and glue ruler to the edge of plexi sheet lengthwise. The dowel pins are beveled on each end. Cut or sand one end flat. Glue the pins into the ruler's binder holes. Once its dry, the assembly is ready to use.
Step 2: Suggested Use
I use 3-hole punched college ruled paper because I had a pack of it lying around. A rubber band works alright, but you might want to use a clip to secure the pages as you draw.