This Activity is meant for Boy Scouts.

rope, pencil, paper for each player

develop knot tying skills

Each player has a paper, pencil, and rope.
Players sit in a line and put on blindfolds.
Leader ties a knot in his rope and passes it down the line for each player to feel for 10 seconds to figure out what it is.
Each player writes down what knot he thinks it is and then tries to tie that knot in his own rope.

Leader checks tied knot versus written knot.