Note 2 - Liquidity and Summary of Significant Accounting Principles (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Retained Earnings (Accumulated Deficit)	$ (30,645,022)		$ (29,936,241)
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	366,232	$ 1,305,261	928,681	$ 2,106,208
Cash, Uninsured Amount	400,000
Accounts Receivable, Credit Loss Expense (Reversal)	17,500	0	160,000
Accounts Receivable, Allowance for Credit Loss	49,900		32,400
Inventory, Finished Goods, Gross	136,000		150,000
Inventory, Raw Materials, Gross	$ 75,000		60,000
Inventory Valuation Reserves			16,000
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	1 year
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	6 years
Asset Pledged as Collateral [Member] | Corporate Credit Card [Member]
Restricted Cash		$ 55,000
Private Placement [Member]
Proceeds from Issuance of Private Placement			$ 1,997,500