I'll start us off with my must have - the QuickJack. I have minimum head room and limited space in my garage so jacking up my vehicle all at once makes projects for my car much easier. Jacking up each corner by corner to get all 4 wheels off the ground is a thing of the past with this unit. It's been a great investment. I don't have an image of mine in use so using one from our 911SC.
Now share with us what yours is!