Sensory bottles! They used Voss water bottles. Not sure where to find them but any water bottle will work. use mineral oil for a way to slow down the materials in the bottle. I usually do 2/3 water to 1/3 oil. Can also do just rice and small objects for I-Spy bottles.
button snake - fine motor activity for teaching buttoning skills (happy hooligans) what a great craft idea for camping trip . doesn't take up a lot of space and the toddlers love the twirly effect that the snake makes when done.
Use a tissue box, a hole punch and a shoelace for a practical life skill practice and a fine motor activity in one! Like so many things (for both kids and adults) learning on a small scale can make it hard to see what's really going on. If you blow it up and break it down, everything gets a lot easier.