Circuits in Chrome
Circuits.io is an in-your-browser (okay Chrome fully tested but its working pretty well in IE9) circuit design tool, that makes it fun and easy to design, share and produce electronic circuits. It might not be better than the real thing, but it is definitely more versatile and most of your students will be able to take their work home with them.
Pick which circuits and PCBs you want to use, dish them out on a grid and the webware feeds back when your connections are faulty. Design, build and share.
Maybe from here, you build it for real?
Any electronics, science teachers want to comment?