Irrational Orrery Lust

I don't want more stuff.  Our house is full to overflowing with odds and ends -- family memorabilia, trinkets, lovely things we've been given, odd things I've picked up here and there (literally picked up, as in rocks, snake skins, bones, feather, driftwood, shells . . .

So why do I find myself thinking an orrery would be a nice thing to possess? I mean, I already know about the solar system -- I don't need one of these nifty gizmos to convince me that the planets rotate round the sun and the various moons go round their particular planets.

It's just that these early scientific instruments with their elegant brass gears are so beautiful!  They would give a room a hint of steampunk, a suggestion of mad scientist, and a whiff of Merlin. 

Desire isn't rational; it just is.

 (I'd also like an astrolabe.)