If someone has trouble doing up their buttons or needs to learn how to, try getting them to try it blindfolded (see http://therapyfunzone.net/blog/using-a-visual-barrier-when-doing-fine-motor-tasks/)
A good game for weight and volume might be to blindfold someone and have them feel a container and then feel a measuring cup and guess how many cups of water would fill the container. When they answer remove the blindfold and fill the container one cup at a time.
