Some friends on a food and wine e-mail discussion list I've been involved with for well over a decade (I think it's nearly 15 years already!) were discussing the various CSA opportunities in their local areas.
One that we have here in Santa Fe seems to be quite a bit different than the rest.
You decide what dollar amount you want to put in at the beginning of the year, and then receive credit for that amount of produce... they have vegetables, fruit, herbs, flowers, and honey. You stop by their booth at the Farmer's Market, select anything you like, and they deduct the market value from your earlier payment.
I like it because it solves the problem of receiving too much at any one time, or too much of any particular item. Their prices are very competitive with the rest of the farmers at the market too, and they will roll over the unspent amount to the following year if you don't use it all.
I usually have a vegetable/herb garden, but with limited space and free time I can't generate the wide variety of produce that the farm can.
What CSA opportunities exist where you live?