Yes!<p>SmartConsent: A way to engineer an end to campus sexual assault. The rape whistle can be improved upon. Even a very simple reengineered "garage door opener" transceiver glued to the upper right hand corner of every bed on campus would do the trick, and would permit young women and men to call for "Consent First Response" on a Red Alert (physical harm) or Code Blue (perceived coercion) whenever they are feeling uncomfortable and need a discreet first responder to come help sort things out.
Space elevator.<p>Ok now a non-facetious answer: I'd like something I can install on my computer which will prevent it downloading 100mb updates when I'm tethered instead of on a normal network.
Something like Youtab (<a href="https://www.youtab.me/" rel="nofollow">https://www.youtab.me/</a>) but that prints out the entire music sheet for violin/piano, etc