I bought a light shade that I love but it has quite a small hole for attaching to a lamp so it fits my bedside lamp but not the upright floor lamp I had or one I have just bought. The floor lamp is from Ikea and has a big wide bit for the bulb and shade to go in/on so I think I would need something which screws into that to make it smaller (if you know what I mean). I see lots of ones to make it smaller but not larger - would be grateful for any ideas. Thanks.