Scissors in the four-star map should be schoolbags.

The title means

In which pictures does your favorite stationery appear? Just add up the stars in these pictures and tell me.

I will look for the corresponding serial number in the picture on the first page according to this number. This is your favorite stationery.

This game is a binary problem.

For example, I like pencil sharpeners.

The star of the pencil sharpener is 1+2+4=7.

You tell me it's 7, and I'll look for the seventh stationery-pencil sharpener.