Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023
Cash flows from operating activities:
Net income	$ (3,135,449)	$ 1,370,296
Adjustments to reconcile net income to cash provided by operating activities:
Share-based compensation	310,094	204,797
Depreciation and amortization	547,152	489,103
Deferred taxes	(958,956)	499,710
Changes in operating assets and liabilities:
Inventories, net	250,864	293,971
Prepaid expenses and other current assets	(204,637)	(65,107)
Accounts payable	518,626	698,221
Accrued expenses	(161,858)	254,281
Deferred revenue	(79,327)	(2,469,116)
Net cash provided (used) by operating activities	(3,476,421)	1,267,453
Cash flows from investing activities:
Purchases of property and equipment	(994,261)	(718,274)
Purchase of marketable securities	(1,015,501)	0
Net cash used by investing activities	(2,009,761)	(718,274)
Cash flows from financing activities:
Proceeds from employee stock options	0	41,365
Payment on notes payable	(46,757)	(43,671)
Net cash used by financing activities	(46,757)	(2,306)
Net increase (decrease) in cash and cash equivalents	(5,532,939)	546,873
Cash and cash equivalents at beginning of year	8,813,626	8,266,753
Cash and cash equivalents at end of year	3,280,687	8,813,626
Supplemental cash flow information:
Cash paid for income taxes	432	111,456
Cash paid for interest	2,177	5,096
Supplemental disclosures of non-cash activity:
Net exercise of stock options	90,000	209,290
Trade Accounts Receivable [Member]
Changes in operating assets and liabilities:
Accounts receivable – trade	(469,053)	(611,180)
Other Receivables [Member]
Changes in operating assets and liabilities:
Accounts receivable – other	$ (93,877)	$ 602,477