Final "exam"

For those of you who teach and work with 8th graders that move on to another school for high school -

Next year we are adding 8th grade. I've been tasked with the job of creating an "exam" for each semester in technology (it is separate class). This goes against my every fiber, but I thought I would try.

It doesn't have to be a paper/pencil test per se, but could be a project or a set of skills to demonstrate during the last couple weeks of the semester. At this point, I can't even begin to visualize what this would look like nor would I know what the essential skills are that they need to move on to high school.

Does anyone else do this? Any suggestions?