Popular stencils
Ross Synergy 1
Front and Rear Rack views for the Ross Synergy video production switcher. The views were taken from the manual on the Ross Video website.
HP ProLiant 3D
HP ProLiant Servers
Network Locations
This stencil contains various size sites and locations for designing high level Wide Area Network diagrams
iPad iOS 6 Stencil (Portrait)
iPad iOS 6 user interface components from the iPad Stencils Kit in portrait orientation.
Cisco CVD 2014 Security Icons
Cisco released updated CVD Icons in many formats, but of course, no Omnigraffle stencil. These are built from the PNGs. http://www.cisco.com/c/en/us/solutions/enterprise/design-zone-smart-business-architecture/cvd.html This is the Security Icons Icons section.
Standard Batteries
These batteries symbols go with my PCB symbols.
Red Meat
Various cuts of meat for butchery diagrams and other uses. Hamburgers, steak, etc.
Cisco CVD 2014 Routing WAN and Network Management Icons
Cisco released updated CVD Icons in many formats, but of course, no Omnigraffle stencil. These are built from the PNGs. http://www.cisco.com/c/en/us/solutions/enterprise/design-zone-smart-business-architecture/cvd.html This is the Routing WAN and Network Management Icons Icons section.
Graph Model
Model your use-case data as a graph (e.g. Neo4j).