Although I tend to shy away from Buzzfeed lists, this list draws from a thread of teachers sharing their best tips and tricks on Reddit. It has everything from money-saving tips for bulletin boards to simple management hints, and many teachers share their successes using these tips either in the tip or on the thread, which is linked at the top of the article.
Another article that I was willing to put my Buzzfeed bias away for, if nothing else to help other teachers. We spend a lot on our classrooms, personal supplies, and decoration. I come from a family full of crafty teachers, so simple DIYs are old hat to me, but some of these ideas are amazing time and money savers. I know it's getting close to time for many teachers to go back to their classrooms, so it's good to have ideas for anything new you may want to add to your room this year!
This article claims it's for high school teachers, and in my experience, these do help in high school classrooms, but a lot of them are adaptable to other grade levels, too! Also, my personal tip for the "Black Binder" idea, which I always used, is to also keep master copies of your printed worksheets and assignments. If you run out of copies, your new copy may have hole punch marks, but it's so much easier than searching web links and document files (and it makes work samples easier!)
A few of these tips are repeated from other lists, but there are some real gems in here. Some of them make it easier to track students, and others make supplies last longer, but they all seem very helpful.
This is less of a tip list for organization and management, and more of a curation, but I think it's good to have. There are tons of useful apps and technologies out there to help teachers plan (and bring those oh-so-important 21st Century skills into the classroom), but there are so many copycat tools and buggy messes out there. The authors found and tested free EdTech, curated them by subject, and explained them, all so that you don't have to waste time and money on tech that doesn't work.
A list that focuses on what works in an elementary classroom, but don't disregard it if you don't teach elementary grades. I love the premade focus board (because I've had my daily learning goals get wiped away by an accidental shoulder brush one too many times) and the folders that work for differentiation most of all, but there are some good organizational and DIY tips here for everyone.
This is a single tip, but it’s a really useful one (and it comes with a printable version if you want to use it!). These commonly asked questions can go up on a whiteboard or chalkboard and answer common questions about what students can and can't do. If you need different clip art or questions because you teach at a different level or have specific needs, it's also super modifiable!
These tips are a bit more organizational for the teacher than the classroom, but they're useful. I know that a lot of teachers are Type A people, really on it, and I had a good group of colleagues in the "5:30 Club," as we called it. We work late. That's fine, but there are times when working late still doesn't help, or perhaps you have some obligations for a certain week and need to minimize your after school time. These time and organization tips really help.