We've had several people ask about how our touring stage is designed, so I took some photos to show you how it works.
Here's our stage without the curtain attached:

The stage frame is made from squares of 1x2, with black canvas stapled in the middles. This makes the stage very lightweight and easily portable. The size of your stage depends on how tall you are and how wide you want it to be. You can determine your appropriate dimensions from there.
Our stage comes apart in two sections and is joined in the middle by latches. The front "squares" are joined by piano hinges on the outside. The playboard is made of wood and slides down over the top of the stage frame. The playboard has Velcro glued and stapled along the length for the stage curtain to attach to.
The side squares of the stage are also attached with piano hinges, but they are mounted from the inside. More on that later.

Here's another angle of the stage frame.

Here's a close-up of the piano hinge that connects the top and bottom "squares."

Here's the center seam where the two halves of the stage frame join together. You can see the latch that connects them.

Here's a close up of the end of the playboard. You can see how it fits over the top of the stage frame. The playboard is such an important part of a puppet stage. I could write a whole post about playboards. But I won't.

Here's Drew behind the puppet stage, working out a shadow sequence for one of our shows. (Don't tell him I posted this picture.) The inside of our stages are lined with hooks where we hang the puppets. It's a great way to organize the backstage area. See how the shadow screen is attached to the back of the playboard? I told you that playboards are great!

Here's a close up of the hooks. Each hook is marked with white tape, so that you can easily find it during the show (since it's dark backstage). You can also see that the playboard is held together in the middle by a C-clamp.

Here you can see the hinges on the inside. Again, they are piano hinges. The wires along the insides keep the puppets from bumping up against the stage curtain in an unsightly way during a performance.

Here's the side of the stage. The only two "squares" on each half of the stage frame that aren't connected by hinges are these two side squares. The reason is that, when the stage comes apart, the sides fold all the way behind the front squares, and then the whole thing folds in half. It works beautifully.

A closer view of the side. The arm that's labeled here can swing up vertically and hold a backdrop.
And that's it! I hope this is helpful.