Photo Editors and Designers
Photopea - Saves in .PSD format and edits existing .PSD files
Lunapic (right click extension)
Picozu (Chrome App)
Ribbet (Chrome App) - Access Google Photos and save back in Google Photos
3D Printing and CAD
Mecabricks - Online Lego builder that can be downloaded for 3D printing. No registration needed to build but user must be logged in to download files and save.
Planner 5D - Interior design site
Roomstyler 3D - Room planning site
Tinkercad - Great 3D design site. Does require log-in.
Animators
Zimmer Twins at School - Free to use. $9.95 per month for optional teacher classroom management subscription
Audio Editors
Mix the Cloud - DJ crossfader for Soundcloud and YouTube audio
Soundtrap - Multiple layer audio mixer
Speak Pipe - Receive audio messages or use as a super simple audio recorder
Charts and Infographics
Creating with Code
Google CS First: Create your own Google Logo
Scratch - MIT's open source programing platform
Video Creation and Digital Story Creation
Adobe Spark - All kinds of creativity tools.
Book Creator App - This one does require some front-loaded setup but is a great tool for students to share learning.
Screencastify - Record your screen
WeVideo - Video editor
Really Fun but still Useful
Animate any portrait with facial expressions at Avatar.Pho.To
Photofunia - Small number of image effects may contain weapons of be of a PG nature.