A rube-goldberg machine who's only purpose would be to increment time only as I worked on it. The method of incrementation however would become increasingly complex and confusing... Seriously though, I'd try to come up with an app that would put the power of information into the hands of regular non-technical people. The "power of information" could be a very simple concept using public information with a simple web-based interface, for instance: a dynamic map of all board members of all US companies and their memberships on other boards. This could be expanded easily in a second stage to shed light on campaign contributions. Maybe data-retrieval exists for this but perhaps not as compelling as I'm imagining it.

Probably nothing. I usually dream of having weekends for myself but when I do, I don't do anything with them. It's pretty depressing.

A contraption let lets you record your dreams so you can play them back. I'm always dreaming of great ideas but when I wake up I totally forget them

This is cool... but a tape deck? Or a pen and paper you scribble in the dark?

Cool question. I've always wanted to record an album, I'd do that. Music, vocals, mixing, mastering, prepare some visuals to go with it. Invite some other people to join in where they could.

I'm into amateur electronics and I'd love to build a programmable automatic cocktail mixer/dispenser.

Alternatively a small 4 wheeled robot to tinker with.

that would be cool

like 3d printer for cocktails

I niche product I know would generate some money, but just don't have the time or energy right now.

An HN post that displayed * correctly.

Another house

I like this. I dream of quitting my job, buying land, building a house, and starting a small farm.

I'm just so tired of the BS in corporate life.

yeah a mountain or beach retreat would be cool

Depression.