My first project was a batch/visual basic script that could do a few things. Open and close CD trays, show a fake virus pop-up, log off, and some other misc stuff.

My second script was a 1 line batch script with vbs generated from itself. It would fuck up your system, put itself in startup, try and replace Explorer.exe with itself, show stuff on screen, reboot it, put itself in strange places so it could be run of the user did something like access Windows features. Never used it but it was fun to make