Jabba the Hutt Tazos from Walker’s Crisps
Tazos are essentially the same as Pogs, although these are made of plastic rather than cardboard. The main difference is that Tazos have little cutouts on the edges that allow you to link them together if you so choose. These were part of a series of 50 Tazos that were given away with Walker’s Crisps in the UK when the “Special Editions” of the Star Wars films came out. (Apparently the one with the CGI Jabba was only given away with Doritos chips). Here is a list of all of the Tazos in the series.
EDIT: I later got a number of other Tazos. They come in a variety of shapes and designs. The ones that look a little blurry in the photos below are actually lenticular Tazos that have a sort of pseudo 3D effect.