The only thing that springs to mind is an Automotive Leisure or now defunct NR porch awning. They do come up for sale second hand so you should be able to pick a decent one up for £150/200. Other options would include a pup tent which would be far cheaper or a Fiamma Caravanstore set very low to protect goods from the rain. We use this set-up to protect a table top fridge, clothes maiden, bikes etc. It does come out 2m though.
Colin