UFO catchers are super popular in Japan. After all, a whole lot of those plushes over on the Japan Plush pages have to have a way for people to win them! Sega makes UFO catchers for both the USA and Japan. They don't always dispense Sonic things, but these sure do!

Eah of these UFO catchers is surprisingly pink! (but why) These are early-years machines, and as you can see they're full of little classic dolls. You can easily spot Eggman in the first and last machine. The middle seems to be double sided, with many small Sonic trinkets in the left side. You can see Sonic on every grab-door! With the speaker in the front, it looks like these are also likely musical or sound-related in some way.
On the white machine, the side posts are decorated with Sonic stock-arts and also the little animals that you free from inside Eggman's robots.