1. You may not need these three tricks often but when you do need them, having them at your fingertips can be very helpful.
● If you ever accidentally close a tab while browsing in Chrome (this happens often to me when I have a zillion open at a time), if you hold down Ctrl-Shift-t, the last tab you closed will reopen. You can continue to do this and open other previously closed tabs. The "undo" button in Google Docs/Microsoft Office has always been a necessity in my life and this shortcut is right up there with that!
● If you right-click on a tab in Chrome and choose "Pin Tab" and then you can no longer close that tab by accident ~ no more black x.These tips work as long as you have that Chrome experience open.
● The Chrome extension OneTab will take all your open tabs and put them in a list for you in your browser. All thirty tabs you had open instantly become one… a nice way to clean up a cluttered screen and help free up computer space (RAM if you are technical) so your machine runs more efficiently.
2. Want a less expensive, not-painful-if-you-step-on-one, and neat way to have your students use Legos? Or are you a Lego fan? Try this online version and see what you think! https://www.buildwithchrome.com/ You can play without attaching your Google+ account (and for our students that will be how they will have to use the site as they do not have Google+ enabled).
Did you recognize me in the picture above? I created an avatar and can now have my avatar share all types of messages all through the extension Bitmoji… she can say hi, give praise, show disappointment, whine, say thanks, etc. It is a fun way to add some spunk to items you share (this is not one I would recommend for student use, as you will see if you try out the options, so I suggest keeping your avatar-making methods secret). 
