Note 5 - Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Gross carrying amount	$ 220,346	$ 230,517
Accumulated depreciation	(161,899)	(107,922)
Property and equipment, net	58,447	122,595
Factory and Office Equipment [Member]
Gross carrying amount	199,085	184,241
Accumulated depreciation	(155,437)	(85,093)
Property and equipment, net	43,648	99,148
Leasehold Improvements [Member]
Gross carrying amount	21,261	46,276
Accumulated depreciation	(6,462)	(22,829)
Property and equipment, net	$ 14,799	$ 23,447