IMHO the Chumby should come with a stylus.
I have experimented with several methods of interacting with the chumby screen.
There is no doubt that the use of a stylus is by far the best way to interact with the screen.
An old Palm III stylus is perfect.
I figure that the first accessory to be a "HIT" with chumby users will be a stylus.
The Chumby is not an iPhone. I suspect the screen on the iPhone costs as much as the entire chumby.
Go and try to replace one.
The Chumby screen does not respond like a touchpad on a laptop.
The Chumby responds like a handheld PDA to the touch of a stylus.
IMHO The Chumby should have come with some sort of stylus.
I understand that Chumby inc believes that it can be operated without one...and it can. It is just a much better experience when a stylus is used.
I can see that one of the issues that Chumby inc. ran into is where to store a stylus. If you have a device which uses a stylus then you should also provide a place to put it when it is not in use.
All of that costs money. The Chumby as a device is built on a tight budget. adding a stylus could add a couple of dollars to the cost. (cost of stylus, forming a hole in the leather with a tube to hold the stylus, making sure that holder doesn't interfere with any other functions. The flexibility of the leather is a key feature of the design of the Chumby.
My advice.
Just buy a nice stylus and keep it next to the chumby.
'Simple.
Yaesumofo
A Chumby in hand is worth 20 in the Wherehouse.