It is possible
Straws for drinks differ with color, length and thickness.
For certain in kakomnibud a box spoons, forks and knives from different sets lie alternately.
Let children will attentively study them to the smallest curls on handles and will find relatives.
It is possible to mix pasta of different forms and to ask kids to sort them.
Let they will divide mix of peas, haricot and lentil into three groups.
Mix any subjects and products, your assistants will patiently put everything in order.