Note 1 - Basis of Presentation - Basic and Diluted Loss Per Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Basic net loss	$ (1,986,978)	$ (432,937)
Add back: Gain on change in fair value of derivative liabilities		(492,198)
Diluted net loss	$ (1,986,978)	$ (925,135)
Weighted average basic shares outstanding (in shares)	17,966,907	17,594,220
Shares issuable from convertible credit line payable (in shares)		130,578
Dilutive shares (in shares)	17,966,907	17,724,798
Basic (in dollars per share)	$ (0.11)	$ (0.02)
Diluted (in dollars per share)	$ (0.11)	$ (0.05)