Note 2 - Liquidity and Summary of Significant Accounting Principles (Details Textual) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Proceeds from Issuance of Private Placement				$ 0	$ 3,957,757
Retained Earnings (Accumulated Deficit)		$ (28,492,446)		(28,492,446)		$ (26,764,805)
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents		399,371	$ 3,444,828	399,371	3,444,828	2,106,208	$ 1,414,569
Cash, Uninsured Amount		400,000		400,000
Accounts Receivable, Allowance for Credit Loss		0		0		0
Inventory, Finished Goods, Gross		132,000		132,000		157,000
Inventory, Raw Materials, Gross		94,000		94,000		83,000
Inventory Valuation Reserves		0		0		0
Revenue from Contract with Customer, Including Assessed Tax		$ 118,169	$ 0	$ 179,269	$ 0
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		1 year		1 year
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		6 years		6 years
Asset Pledged as Collateral [Member] | Corporate Credit Card [Member]
Restricted Cash		$ 55,000		$ 55,000		55,000
Private Placement [Member]
Proceeds from Issuance of Private Placement	$ 3,957,757					$ 4,500,000