In this screen capture from Jeeves and Wooster we see an interesting glass bowl on the coffee table on the set of the Bertie Wooster flat. This glass bowl is seen on the table throughout the series. Recently I decided to search for one on eBay and found one very like it
It is a Davidson cloud bowl: https://www.ebay.co.uk/sch/i.html?_nkw=davidson+cloud+bowl&_sacat=70031