(via Pixabay) • Checklist: CC-By Crispy (via Flickr) • Robot Devil: copyright FOX • Volume Knob: CC0 (via Pixabay) • Camel Shape: CC0 (via Pixabay) • Dromedary Shape: CC-By-SA USPN,Whidou (via Wikimedia) • Dam: CC-By-SA Matthew Hatton (via geograph.org.uk) • Cogs: CC0 (via publicdomainpictures.net) • Thread Balls: CC0 (via Pixabay) • The Fortune Teller: Georges de la Tour (public domain) • Microphone: CC0 (via Pexels) • End Sands: CC0 (via Pixabay) • logos: Pivotal, Spring, Twitter and Github logo copyright their respective companies.