I recently added A Bunch Of Stuff to my riichi mahjong collection! \o/
Figure 1 shows the cases for the three sets. From top to bottom, they're a Silver Dragon (a smol travel set), a Sora (a 30mm set endorsed by one of the Japanese pro mahjong organizations, Nihon Pro Mahjong), and an AMOS Masters (the gold-standard riichi set, which also comes with a Compass centerpiece — my second — and a Hayahaya scoring aid — which is useless to me until I get it translated lol).
Figure 2 shows a size comparison of the tiles, with a U.S. quarter for scale.
Figure 3 shows off the backs of the Silver Dragon tiles and their adorably tiny little smol tenbō. 🥺