1. RGB: http://www.rrrgggbbb.com
Site that shows you the three primary colors of this model, in case you forgot.
2. Ringing Telephone: http://www.ringingtelephone.com
...
3. I Can't Sleep: http://www.icantsleep.help
This site will help you counting sheep so you can sleep.
4. Rafaël Rozendaal: https://www.newrafael.com/websites/
Websites made by the same artist, DONGs 2, 5 and 6 of this list were created by him.
5. Egg Alone: http://www.eggalone.com
This egg scales to the size of your browser window.
6. Almost Calm: http://www.almostcalm.com
The gradient rotates with your mouse.
7. Mystery Search: https://mysterysear.ch
When you press search, you'll be taken to Google but it searches what the last person searched for.
8. Ice Lolly: https://www.icelolly.com/wheres-lolly/
You are in a virtual plane looking out the window, you have to guess where in the world you are.
9. Up to Tab: https://uptotab.com
Use the space bar to collect tabs and avoid ads and videos because they use RAM, you'll upgrade your browser as you advance.
10. DNA Extraction: http://learn.genetics.utah.edu/content/labs/extraction/
This interactive guide teaches you how to collect DNA from a person.
11. Compare Height: http://www.mrinitialman.com/OddsEnds/Sizes/compsizes.xhtml
This site helps you compare up to six people's height so you can compare how they would look standing next to each other.
12. Finding Strengths Test: http://richardstep.com/richardstep-strengths-weaknesses-aptitude-test/free-aptitude-test-find-your-strengths-weaknesses-online-version/
84 questions to find out what are your strengths and weaknesses.
13. Bezier Curves: https://www.jasondavies.com/animated-bezier/
DONG already covered in: Printable Paper! -- DONG.
14. NASA's Scientific Visualization Studio: https://svs.gsfc.nasa.gov/cgi-bin/search.cgi?contentType=s
This website shows you different phenomenons in a kind-of-interactive way like moon phases, solar eclipses, etc.
15. Helioviewer: https://www.helioviewer.org
It's an open-source website offering solar data, videos and images from whatever time you choose.
