UKH

Anybody able to recommend something that I could put onto a wall that is bigger than a postage stamp?

Or would it be best to buy some sort of monitor that takes SD cards?

Don't most televisions support usb slideshows? I would have thought a memory stick or usb-sd adaptor should do and a cheap telly is probably very similar in price to a large digital photo frame plus could be rigged to stream photos from a cloud based source with a Chromecast or similar. 

A cheap telly does sound like a good idea, especially as the price of these photo frames is ridiculous.

Cheers