Pickling vegetables. On a website that sold boxes of vegetables, I found a lot of recipes for using up your surplus. Some of them sounded lovely. One was for pickled carrots - but I had no carrots, just rather too many sweet red peppers, so I adapted the recipe for those. I buy jars of mild "Piquant Peppers" so I thought I would like home-pickled ones, and I was right.
Cucumbers were next, full-size ones cut up as they were available more widely than gherkins. Again a success. Either or both of these are good in Welsh Rarebits or cheese paninis or with cold meat and/or cheese.
I tried radishes (because they are crisp and brightly coloured) Interesting texture, as they stayed very crisp, but I wasn't keen on the rather sulphurous taste. They were still radishy.
Then I bought a halogen oven, and noticed that the temperature can go right down to 50 C (about 130 F) which is cool enough to dehydrate food. I can report that sliced oranges were quite successful, and tasted great, but if I do them again I will peel them first - the skins get pretty tough.
Sliced strawberries were quite good, but got very sticky and looked as though there had been a massacre. Sliced mushrooms look good but I haven't yet cooked anything that needed them, so I don't know how the texture is.
The drawback with dehydrating anything is the length of time it takes - everything I have tried so far took 5 - 6 hours. Even at a low temperature, that is cancelling out the benefits of the halogen oven using a lot less power than a normal one.