Jenkins store at the Continuous Delivery Foundation

The CDF store has a featured collection of items with Jenkins logos, including stickers, t-shirts, socks, etc.

Jenkins store at Cafepress

Cafepress hosts a Jenkins store for various articles with the Jenkins logo on them: t-shirts, mugs, water bottles, etc.

Jenkins store at Shapeways

The Jenkins 3D Shop offers 3D printed figures of Mr. Jenkins.

The model for these figures was created by akiki and is licensed as CC-BY-SA. It can be be downloaded from the logo wiki page.