Another handy item is the Baxley Sport chock
http://www.baxleycompanies.com/Sportchock.htmlGreat! for parking and they have a trailer mount kit for it that allows you to install and remove it from a prepped trailer in a couple min. Alone the chock will hold a bike quite securely. Combine it with a stand and it's rock solid.
A good rear stand should be the first priority item, as it allows for more work stuff. But stick that chock on the list - I love mine.
- oh and don't assume that all chocks are the same. Really, the baxley is better. It's all about the two piece cup bit that's patented. Really grips the bike