Half a croissant, on a plate, with a sign in front of it saying '50c'
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product: clock: power source
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Ideas are sorted alphabetically.
Ideas in bold have been created this week.
 (+2, -1)  Bicycle Pump Clock 
 (+6)  Cuppa Clock 
 (+5)  Descending Clock 
 (+2)  Domestic power outage clock 
 (+3, -6)  Free Energy Clock 
 (+4)  Plutonium Watch 
   Radiometer Clock 
 (+6)  Self powered pendulum clock. 
 (+2, -1)  Sterling Engine Clock 
 (+3)  Two battery compartments 

 

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