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Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Cash flows from operating activities:    
Net income (loss) $ 95,962 $ (143,153)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:    
Depreciation and amortization 164,738 101,405
Share-based compensation 122,186 160,962
Deferred taxes 83,709 (40,256)
Realized gain on sale of marketable securities (26,068) 0
Changes in:    
Inventories (481,767) (29,530)
Prepaid expenses and other current assets 91,222 (115,604)
Accounts payable 81,840 (125,313)
Accrued expenses 157,653 (231,367)
Deferred revenue (64,349) (44,508)
Net cash provided by (used in) operating activities (1,252,723) 128,857
Cash flows from investing activities:    
Purchases of property and equipment (93,070) (263,346)
Proceeds from sale of marketable securities 518,000 0
Purchase of marketable securities (514,845) 0
Net cash used in investing activities (89,915) (263,346)
Cash flows from financing activities:    
Payments on note payable (8,130) (11,409)
Net cash used in financing activities (8,130) (11,409)
Net decrease in cash and cash equivalents (1,350,768) (145,898)
Cash and cash equivalents at beginning of period 3,280,687 8,813,626
Cash and cash equivalents at end of period 1,929,919 8,667,728
Supplemental disclosures of cash flows information:    
Cash paid for interest 26 825
Trade Accounts Receivable [Member]    
Changes in:    
Accounts receivables (1,444,442) 540,520
Other Receivables [Member]    
Changes in:    
Accounts receivables $ (33,407) $ 55,701