I think I first started using zip ties almost 10 years ago when I was teaching third grade. It bugged me that the rows of desks would migrate across the classroom. I started zip tying the legs together and the desks barely budged. When I needed to move a desk, I could slide the zip tie off the leg, or cut it off and replace it.
Cords that are too long can be wound up and tied together.
I have a long cord that runs under a table.
To keep it off the floor, I zipped it to the bar underneath the table.
I Saw this idea on Pinterest. Zip tie a storage crate to the side of a desk, for extra storage.
When I didn't have cubbies, I used the wire crates zip tied together to create my own cubbies for my classroom. The zip ties ensured that they stayed together.
How about using zip ties instead of using loose leaf rings when making class books?.
They are fun and come in many colors.