shotsnapp - Create beautiful device mockup presentation
Glyphy - Copy & paste fancy fonts + cool symbols ☞✺✐™
Base UI Sketch Framework - Huge set of everything you need to design and prototype
SmartPaste - Copy-paste nicely styled text to apps like GMail and Google Docs without learning new shortcuts.
Sketchapp TV - Create Awesome iOS Apps With Sketch
CSS Wand - Easy copy-paste beautiful CSS animations