Well, by ‘fun’ I mean it’s more like educational fun. Edutainment? Funucation? I don’t know. Anyway, you can now convert measurements and units of weight by just typing it into Google. Say you want to know how many kilometres are in five miles; you can ask Google ‘how many km are in five miles?‘ And there it is. But! You might want to know what 80 knots is in kilometres per hour. I often do, so I can type in ‘how many km/h is in 80 knots?‘ Or ‘how many cubits in 3 hand?‘ ‘How many acres in 4000 square metres?‘
Also, if you need to know the time somewhere, just type in ‘time [city name]‘ and it comes up. (For example, ‘time reykjavik’.) That’s not so much fun as it is a helpful hint. (It also works with ‘weather’ (e.g., ‘weather ohakune‘), and ’define’ and some other keywords.)
Google Squared builds information tables out of data on the internet. It’s a bit hit or miss – a search for ‘Wellington City Library‘ is fairly useful, but ‘Twilight’ tells us that Bella is a guinea pig.