Possibly the tiniest commercially available terrarium. This is from a company called "Dunecraft" and cost about £4, which is pretty expensive for what it is. Came with 4 Robust Hedgehog Cactus seeds and a compressed disk of soil. The Box for this has photoshopped images on it that are so misleading it's funny. There are other varieties to collect, too.

Can this still be considered a working miniature, given that the full-size "real" phasers are handmade wooden props given functionality by a TV special effects department? Perhaps not, but this thing lights up, which is more than can be said for the genuine article, so I'm including it here.

Possibly the smallest interchangeable-lens SLR camera ever made, the Pentax Auto 110 took 110 film (obvs.) and was manufactured from 1978 to 1985. Sadly, my example is slightly faulty (the film transport mechanism slips sometimes). The 110 Auto is now quite expensive and collectible these days, but I bought mine a long time ago and it cost me next to nothing. I love small cameras like this. Infact, most images on this website were taken with this camera's spiritual successor, the Pentax Q!

A tiny game of knock-off Jenga. I only built a small tower for illustration purposes. It's nearly impossible to play, especially with the included tweezers (and not much fun either, if I'm honest).

A Christmas gift, this USB powered mini leaf blower is handy for making a mess blowing the tiny leaves that fall from my elm bonsai tree around... And that's about it. I guess it also does a passable job of blowing the dust off my keyboard, but in truth it's really more of a novelty. All the same, I still think it's pretty neat.