I printed this to fit into my couch drinks holder so that I could rest a cup of tea on the top without it falling through the hole. Pretty useful if you don't have a coffee table.

The two halves can be glued together with CA glue as there is a central pin which locks both parts in the centre.

I was going to print this as one part but my printer is not very good with support material.

EDIT - I added the Mum's Tea text to make it a bit more appealing.