Building instructions for the One Attachment. Built from LEGO Mindstorms EV3 parts and with an Ultrasonic sensor we've used this attachment to accomplish most of the missions at FIRST LEGO League 2013.
SIngle robot attachment, many points.
This is an pinless robot attachment designed for taking loops. It's built with LEGO MINDSTORMS Robot Inventor parts and it demonstrates how to collect a loop while moving with the robot. The attachment is designed for Luly, small LEGO Education SPIKE Prime competition robot with 3D building instructions. There are other attachments that are designed for taking a loop and locking it so that it does not fall, but they are more complex. Search for 'Carabiner' at FLLCasts.com