You need hollow wall anchors ,not the little plastic ones. These expand against the inside of the wall.

Hi - I have one of these above my toilet - which are not that much wider than the loo itself. Perhaps this one might be ideal for you?

http://www.interiorbathroomdesigns.com/t...

Have a look at these pictures to see what may suit you and click on the picture and it will take you to that picture and some small pictures on the right hand side - above these pictures click on Visit Page and it will take you to either more info or where you can actually purchase the item :)

Here is where you can them -

http://www.amazon.co.uk/KITCHEN-BATHROOM...

Perhaps you may have a shower that you could use to hang shelves?

http://www.amazon.co.uk/Satina-Chrome-Ha...

http://www.amazon.co.uk/KITCHEN-BATHROOM...

https://www.google.co.uk/search?q=over+t...

http://www.watsonsontheweb.co.uk/simple-...

http://www.ebay.co.uk/itm/BLACK-IRON-MET...

Hope the above helps :)

I live in a small apartment with a tiny bathroom. I really would like to buy an over-the-toilet space saver but the space has only a 20" width exactly.

I tried screwing in a shelf above the toilet but the wall is made of plaster. When I tried using an anchor screw, it went through the plaster to an empty space where there's some kind of metal behind it. So that's out of the question.

I could do an over-the-door shelf but would really prefer something over the toilet.

Are there any narrow space savers or any tall and narrow shelving alternatives?