Note 6 - Prepaid Expenses - Prepaid Expenses (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Prepaid software licenses	$ 45,424	$ 36,424
Prepaid insurance costs	20,437	16,746
Trade show advances	24,848	18,707
Prepaid rent	0	27,043
Prepaid office and other costs	57,743	38,772
Total prepaid expenses	$ 148,452	$ 137,692