Commonplace things you've never owned.

[John the Monkey]

...
An LP on the Ronco label

You're missing out.

I have a Christmas Album that has a pop up winter scene inside the gatefold.

 

[HelenD123]

Dishwasher
Tumble dryer
Games console
Any type of portable music player (soon to be purchased I think though)

 

[Pottsy]

A teapot
A chinchilla
A work ethic

 

[HelenD123]

I'd sooner do without a TV than a dishwasher. Wonderful things!

I guess you don't miss what you've never had.

 

[ChrisKH]

An IPOD or digital music player of any sort.
An expensive bicycle.
A 4 x 4 car
Hair.
A vice (but I'm working on this one)

 

[Chuffy]

One of those razors with detachable heads.

 

[TheDoctor]

A pair of rubber pants.

 

[Fab Foodie]

Brogues, I've never owned a pair of brogues...

 

[Noodley]

A Bic razor.

 

[Fab Foodie]

A proper beard

 

[Bman]

an LCD monitor. (/me shudders. I like to see slightly more than 60fps thanks)
A mobile phone that supports DRM (Why would you want technology that prevents you doing what you want!?)

 

[alecstilleyedye]

a windows pc

a stock-aitkin-and-waterman produced record

 

[Beardie]

I don't own a mountain bike! Never have.