The Europlug, a two-pronged AC power plug for regular household appliances, is surprisingly compatible with most of the world's plugs. The Wikipedia map, I discovered via Jiu on Mastodon, highlights this. I knew the British Type G plug with three flat poles could still technically be used, although not recommended(!), by pulling down the ground shutter and shoving a Europlug in.

In some types of BS 1363 [Type G] socket (but not all) the safety mechanism can be tampered with so that a Europlug may then be forced into the open line and neutral ports. The UK Electrical Safety Council has drawn attention to the fire risk associated with forcing Europlugs into BS 1363 [Type G] sockets.

I've seen this used quite a lot in the Middle East as appliances come with both the British and Europlug whereas all wall sockets are British. Looking at the map I was not aware of how much of world actually used Type G plugs.