Well, I can't make em, but we can give developers ideas here.
Feel free to add on.
I want...
Something that will email all new documents on the computer to an email address.
Something to infect any other USB thumbdrives put into computer, that will propagate and do all this stuff.
A antidote that only takes off certain parts.
Maybe something that would listen for a signal and open a certain website when told a url through a program.
Something that would send you history, passwords every so often through email.