Here's my selection of channels. Not all of them are 100% what you asked for, but hopefully some of them will be interesting anyway.
Physicshttps://www.youtube.com/user/minutephysics/videos Short, educational videos.
https://www.youtube.com/user/1veritasium/videos Also educational in nature, broader than minutephysics.
Chemistryhttps://www.youtube.com/user/NurdRage/videos tutorials on various chemical reactions.
Mathhttps://www.youtube.com/user/khanacademy/videos Educational.
https://www.youtube.com/user/patrickJMT/videos Educational.
https://www.youtube.com/user/singingbanana/videos Puzzles and more of the fun side of math.
https://www.youtube.com/user/Vihart/videos Math and poetry.
There's the whole Nottingham Science/Sixty Symbols/Periodic Videos etc group of channels, with content from the University of Nottingham, shot by Brady Haran. Those channels cover a variety of topics, (STEM fields and beyond) and you can find even more related channels if you look on the right side of the channel page for those. All of these are more educational than practical, I would say.
http://www.test-tube.org.uk/ /
https://www.youtube.com/user/periodicvideoshttps://www.youtube.com/user/sixtysymbolshttps://www.youtube.com/user/numberphilehttps://www.youtube.com/user/Computerphilehttps://www.youtube.com/user/DeepSkyVideosAnd perhaps this is also a good place to list a few other electronics channels which each has a slightly different focus than EEVBlog.https://www.youtube.com/user/mikeselectricstuff A lot of focus on practical electronics engineering.
https://www.youtube.com/user/TheSignalPathBlog Tutorials and teardowns, often on RF electronics.
https://www.youtube.com/user/w2aew/videos Tutorials, also with an RF focus.
https://www.youtube.com/user/bkraz333/videos Both tutorials and practical projects, often unique and creative content. Both electronics and misc. science/engineering.
https://www.youtube.com/user/julius256/videos More hobbyist than engineer level. A lot of LED projects.
Misc engineeringhttps://www.youtube.com/user/Aussie50/videos More blog-y. Focus on cars.
https://www.youtube.com/user/AndyDaviesByTheSea/videos And old man doing videos about amateur radio, HHO production, glassblowing and other practical projects.
Misc educationalhttps://www.youtube.com/user/CGPGrey/videos Various random fun facts.
https://www.youtube.com/user/minuteearth/videos Same person who does minutephysics, but about earth science.
https://www.youtube.com/user/destinws2/videos Smarter Every Day. Various experiments.
https://www.youtube.com/user/SteveSpanglerScience/videos Science experiments for kids.
Drawing (Adding these here for completeness.)https://www.youtube.com/user/ZoocDoesStuff/videoshttps://www.youtube.com/user/markcrilley/videosHonorary mentions (more fun than education)https://www.youtube.com/user/photonvids/videos Photonicinduction. The channel is mostly about blowing stuff up, but it since it features a lot of high voltage, high current, and both combined, it can be incidentally be quite educational about the practical side of those things.
https://www.youtube.com/user/msadaghd/videos Mehdi likes shocking himself. Of course, he's a trained electrician or electronics engineer, and the videos are secretly about electrical safety by example.
https://www.youtube.com/user/taofledermaus/videos Videos about mercury, as well as videos about shooting things with weird bullets (!) as of late.
https://www.youtube.com/user/carsandwater/videos A channel mostly about dropping a red hot nickel ball on various items. Strangely mesmerizing.