1930s-1950s faux telephone sand timer

Fascinating three-minute timing piece of kitchenware ... small, lightweight, 1930s style UK pyramid telephone in pastel green ...11cm high, 9cm wide, 4cm deep including the plastic tubing apparatus ...found in my home country New Zealand...shame the right end of base has broken off, but phone remains steady while the eagerly precipitating sand flows...I know a collector with six different small plastic sand timers but she has never seen this telephone variety...no great value am sure, to incite a sandstorm, but an intriguing curiosity ! Anyone with these devices in other creative guises ??!