My first techie tip for you is how to find free clip art online that you can use for your classroom, your TPT shop, Etsy shop, Teachers Notebook shop, or just for fun!
First, don't just go to google and enter the search words "free clip art". What appears usually isn't free, is copyrighted, or will cost you a membership fee for the free artwork. That seems fair, because someone has spent his time creating the art, but you're a teacher, right? So I have some great resources for you that truly are FREE!
Every single thing on this site is free, and there are thousands of clips from which to choose! They have recently opened a sister site, which features artwork for sale, but the search on the original site is extensive, and almost endless!
Again, not all free, but often free borders, etc. to jazz up your work!
Have fun creating,