Ideas - Purpose of the Machine

I have started to research into potential ideas for what the Rube Goldberg machine could actually be used for. Some of the ideas I have considered include:

• Pouring cereal into a bowl
• Opening a door
• Putting a golf ball into a hole/cup
• Ringing a bell

I have found in my research that as-well as the purpose of the device being very simple, the chain of events can also be quite simple. Some of these these events I have looked at include:

• Dominoes falling in a row
• Marbles rolling around down pipes and tracks
• Cans rolling down slopes
• Hammers/ pendulums swinging
• See-saws tipping