The idea is you bring up to 5 items that you have made or grown at home. Maybe your chooks are laying surplus to your needs and you have eggs to contribute. Maybe you handcraft greeting cards. Maybe you have a veg plot with an abundance of produce. Or a fruit tree with more fruit than you know what to do with. There are so many options. You bring up to 5 of these items from home, lay them on the table, and then when everyone has their items on the table you can select items others have brought for yourself. If you brought 4 items, you can take 4 items etc.
We've had homegrown plants, produce, eggs, fruit, homemade lipbalms, soaps, bookmarks, candlewicking, health and beauty products, baking, knitting, crochet, sewing and so much more.
I will say however that the items we bring are generally worth under $5 a piece. You wouldn't bring a quilt you'd spent hours on to swap for a bag of mandarines for example...unless you're feeling especially generous!