MBK 1-Skewer Diamonds
Anything you don't have is easily bought. If not exactly what I used, then at least something pretty similar!
These instructions on how to make a diamond kite might look a bit long, but each step is quite simple to do. Just steadily work your way through from top to bottom, skimming over any detail that you don't need.
At 29 cm (11 1/2 in.) tall, the MBK 1-Skewer Diamond kite is a rather small diamond, with dihedral and a simple one-leg bridle. With a long enough tail, it is equally at home in light or moderate-strength winds.
As a bonus, these instructions also show you how to string several of these 1-Skewer kites together in a kite train.
There's a two-kite train in the photo. This design is so cheap and easy, why not try an even longer train. Imagine 10 or more, all flying on the one line!