Divide the group into two teams and have them line up at / behind the line (no sticks). At a distance, place a pylon with a tennis ball on top (one for each team). Do a relay race where the first player must skate to their pylon, get the ball, then bring it back to the next player. The next player must skate to the pylon and place the ball back on the pylon, then skate back, at which point the next player skates to retrieve the ball, etc...

Skills: Speed (race)