Cuckoo Clock add-ons: Collections, Plugins Cost: $12 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions Cuckoo Clock add-ons: Collections, Plugins: Cuckoo Clock add-ons include themes, collections, skins and plugins. If you already have Cuckoo Clock, download and install these add-ons to add more graphics and functionality to the program. Once you download Cuckoo Clock add-on, run it and it will be installed automatically.