Quite a few years ago, when I was attending the local community college at 13, an instructor gave me the McGraw Hill book "Robot Invasion", which includes some projects for RCX (and it was quite outdated then, as Lego was halfway into the NXT era by then). Components for RCX seem to go quite cheaply on Bricklink, so I might gather the "brain" (programmable brick), sensors, motors and assorted electrical components (wire) to make a small set (have a ton of Technic parts already, but might have to get some studded parts, as well as some older, period correct wheels and axles.
I'm wondering how to make it work on my General Dynamics GD8200 with Windows 7 Pro. It's a police surplus laptop, and as usual with rugged laptops that maintain outdated designs, happens to have a nine-pin serial port on the right hand side, so I can use the IR tower without an adapter. Since this laptop is 64-bit, I've heard you'll have to use third-party software that works with RCX, but just what?