My Most Used Supplies for Lesson Prep

I have SO many piano games and activities saved to my computer, and I've recently been making more of an effort to print them... ALL.  First of all, I wouldn't even dare attempt this feat without have a paper cutter.  I use this Fiskar's paper trimmer.

I also use this Scotch laminator. Great value and works very well!

And finally, I recently discovered this little time saver!  I always like to trim the corners of all the cards that I laminate, because they can be quite sharp if I don't.  It was becoming tedious.  I thought "Surely, there's something out there that can help me do this quicker."  This little gadget has been saving me so much time!  It's similar to a hole puncher, but has 3 different sizes that you can trim corners.

What about you?  Do you have anything that helps you save time prepping for lessons?  Let me know in the comments below!