One of our absolute favourite places to visit for easy outdoor fun on a weekend is our local Pick-Your-Own fruit farm. It's a perfect example of diversification, as not only does Hendrewennol have all the usual berries to harvest during the Summer months, but it also has a themed maize maze (this year in the shape of Wales with famous Welsh castles scattered throughout), large sandpit, and a hay-bale maze. You can visit for free to enjoy the play areas, entry to the maize maze is just a few pounds each.
Last year we discovered that they also grew PYO pumpkins, and I may have gone overboard with the 14 that we ended up taking home. This year we were determined not to get so carried away!