a brilliant brilliant toy - hours of fun stacking them up and knocking them down - (the plastic ones) are great for water and sand play - and even better they pack up small when playtime's over...
stacking cups

1/ rainbow stacking wooden cubes, £16.65, abctoys.co.uk
2/ wooden stacking cups, £19.45, greeneyedfrog.co.uk
mula building beakers, £1.49,
4/ brilliant start stacking cups, £6, elc.co.uk