Relay race ideas?

I have a group of kids in teams of 4 and we are going to have a relay race with different stations... so far I have


filling a soda bottle with a sponge


and


a three legged dash


I want to have about ten stations... Any ideas r appreciated|||Here is something challenging:





Wheel Barrel race.





2 on their hands with their feet being held by 2 in the back and the 2 in the back have their legs tied together (3 legged race style).





Hard boiled egg on a spoon





Fill a cup with spoons of water





Roll a tennis ball across a field with their noses





Etc.|||What about a wheel barrel. Where one person is holding onto someones legs, and the other is on their hands and they're running!! That's always fun! And there can still be 4 people, just work as tag teams!