Note 7 - Concentrations - Customers Representing 5% or More of Total Revenue (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Major Customers 1 [Member]
Revenue by customer	$ 536,615	$ 404,097
Major Customers 2 [Member]
Revenue by customer	240,578	175,020
Major Customers 3 [Member]
Revenue by customer	155,143	141,519
Major Customers 4 [Member]
Revenue by customer	0	78,575
Major Customers 5 [Member]
Revenue by customer	$ 0	$ 75,999