v3.26.1
Note 7 - Concentrations - Customers Representing 5% or More of Total Revenue (Details) - USD ($)
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Major Customers 1 [Member]    
Revenue $ 100,422 $ 191,682
Major Customers 2 [Member]    
Revenue 10,000 30,000
Major Customers 3 [Member]    
Revenue $ 0 $ 18,946