cutting boards , charcutterie boards are pretty easy , if you have access to a planer or thickness sander, There are about 2,972,987 people making them so there is no market possibility , but people really dig having something 'you' made or has a sentimental connection.
My mom used to knit everybody a grandma toque , which you wore all day Christmas and never again LOL .
She now knits tiny hats for new borns in hospital which is fun and baby outfits that she donates to the hospital gift shop , where they sell them for pure profit , which is awesome.