Would you like to come see some toys? "Toys" here have a special sense: objects of daily life that you can find or make in minutes, yet which, if played with imaginatively, reveal surprises that keep scientists puzzling for a while. Table-top demonstrations of many such toys will be presented to visit some of the science that they open up. Tadashi Tokieda, the Director of Studies in Mathematics at Trinity Hall, Cambridge, grew up in Japan, was educated in France, used to be a classical philologist, and has a Ph.D. from Princeton. One of his lines of activity is inventing, collecting, and studying toys. Some of these toys have been featured in shows and exhibits in various countries.