You can easily design your own pen holder with DesignSpark (It's free and easy to use)
I took 10 minutes to sketch a product but of course you can design your own
<br> http://postimg.org/image/4lqe62k49/
Your problem is about organizing small items in such a way that we you need to use them, they can be easily and efficiently picked for use. If that is the case, why does it have to be in cylinder shape? Put some thoughts into your assumptions and get to talk to more people and find out how they address this problem (e.g. observe their desk and check out their "organizers").
Comments
You can easily design your own pen holder with DesignSpark (It's free and easy to use)
I took 10 minutes to sketch a product but of course you can design your own
<br>
http://postimg.org/image/4lqe62k49/
Your problem is about organizing small items in such a way that we you need to use them, they can be easily and efficiently picked for use. If that is the case, why does it have to be in cylinder shape? Put some thoughts into your assumptions and get to talk to more people and find out how they address this problem (e.g. observe their desk and check out their "organizers").