Well that was a fun spring group activitiy wasn't it. For a summer activity I suggest you all get knotted.
A useful knot is the constrictor knot. IT is great for securing rolled up carpets, bags, limbs, etc.
1. Starting in front of the objects, make one wrap from right to left around the object(s) to be bound and cross over in the front.
2. Wrap around the object again.
3. Feed the working end back under the two wraps making sure you first cross over the standing line.
4. Pull both ends to tighten up the knot.