| Note 6 - Inventory - Net Inventory (Details) - USD ($) | Sep. 30, 2022 | Dec. 31, 2021 | 
|---|---|---|
| Materials | $ 193,806 | $ 50,000 | 
| Finished goods | 133,006 | 101,155 | 
| Reserve for obsolete finished goods | (133,006) | 0 | 
| Total inventory, net | $ 193,806 | $ 151,155 | 
| X | ||||||||||
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- Definition Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
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- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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