Daily Writing Tips published here a great vocabulary test. It’s short and fun. They plan to publish other vocabulary tests regularly:

The vocabulary tests will be based on the “Word of the Day” category. Every 20 posts on that category a new test will be released.

I found this funny test related to priorities on haha.nu. I don’t know exaltly where it comes from. I found first occurence in Google in this Forum post in August 2003. Here is the test below:
Five things are happening in your house at the same time. In which
sequence would you solve them ?
1. The telephone [...]