Tomatoes are one of the easiest fruit to grow. This tomato plant self-seeded in the veggie patch so I transplanted it to a pot, which it didn't seem to mind at all. It is loving all the rain, but it is being loved by insects.
One of the easiest fruits to grow is seemingly also one of the easiest fruits to invade. You can see at the bottom of the pot there's a couple I didn't get to in time. I don't like using sprays so I bag my baby tomatoes to protect them as they grow.
There are a few different varieties of bags including mesh ones but I just use paper ones. I have two different types, the larger one has a removable tie while the smaller bag has the tie attached and is a bit more fiddly so I sometimes use small cable ties instead.
Simply pop them over the young uninvaded green tomatoes and they will
continue growing in the bag. Yes the tomatoes will still ripen. The only
issue I have found is that in heavy rain the bags get drenched and can
split, or fly off in strong winds.