These are three of my favs from giftsbeauty.com
Check out Tadashimori's video's on Youtube. (I think he runs Gifts Beauty)
His origamis are AWESOME.
The letter folding is very simple :]
I'll explain each in 3 steps
Step 1: Style #1
This one doesn't take long, and is really easy to open. I tried making a cp for it (the graph below), but it didn't work out very well. I think I messed up some places.
But if it helps, I'd like to say that the red lines represent valley folds, and the green ones are mountain folds.
Step 2: Style 1: step 1
Fold the paper in half vertically...or fold it hamburger style, if you'd like
Open the paper.
Fold one corner along the crease.
Turn the paper around and do the same with the other corner
(The pictures explain better than my words o.o)
Step 3: Style 1: step 2
Fold the little strip on the top of the page down to meet the edge of the...um...triangle (I guess)
Do the same to the other side.
Step 4: Style 1: step 3
Take the bottom triangle and bring it up along the first crease that was made. Open up the strip on top slightly and tuck the triangle in under the strip. Now take the other triangle and bring it down, tucking the corner into the tiny triangle on the bottom (if that made any sense...)
And YOU'RE DONE
Step 5: Style #2: "pull"
Use either a thin type of paper (like origami paper or rice paper), or a more slippery type. Whatever you do, just make sure the "pull" part can slide out easily from the two flaps holding it. I've had trouble getting it to open cuz I used printer paper. Don't make the same mistake that I did.
I didn't make a cp for this one (didn't really think anyone would care)
I've given up on cps after I tried the one for the first style
Step 6: Style 2: step 1
Fold the paper in half horizontally / hot dog style.
Open it up.
Bring all four corners toward the crease.
Fold both edges toward the crease also.