Does anyone know what these are or have any they are willing to part with? They are 2 1/4" tall and made out of plastic. As can be seen, the backs say CHINA and then have a number underneath. I think this means that there are 8 different aliens (since the highest number is 8 but there could be a 9 and 10 for all I know). I suspect these are from the '90s but '80s or even 21st century is also a possibility. I got them last year in a random lot of aliens on ebay. I would love to know what these things are called in the package they came in, or get more.