Here's a photo right from the shelf of Joypolis.
And it's totally stocked with Sonic themed goodies! These appear to be mostly school related, however. The right items look like folders, the next a clear-file (for non-binder use) then possibly some watches? Pens are on one edge, maybe some keychains...the angle makes it difficult to tell.
You can see that there are small size plushes below, likely to be the San-ei modern ones for Sonic & Shadow (at the least, they probably have all characters on hand all the time) A great assortment, this photo was probably taken in 2017.