There is lavender, mint (including peppermint, spearmint, and catnip), rosemary, lemongrass, marigolds, nasturtiums, lemon balm, and bay tree leaves (I have a huge bay tree growing so I can take as many leaves as I want off that and just crush them and spread them around).
I bought a lemon balm a few years ago and I've taken loads of cuttings and had that all over the garden... near the house and windows. I have rosemary, but that's been growing years. I do take cuttings off that as well.
Cheapest quickest option is mint. If you have some at the garden centre by maybe a dozen plants or a couple of dozen. Plant them and they will grow very quickly, they love my soil, they grow even when neglected but a bit of water in the first place will help them grow faster and then you can take cuttings from then sooner. I just take a few stems pop in the jar and water in a week or so later I can plant a bunch of mint.. I have them surrounding the bungalow... my primary reason for this was for Roland and his friends to keep them away, and also Minnie mouse and her friends.... but they keep flies away as well. I only bought this quantity of mint from the garden centre a couple of months ago... I bought 10 plants from one garden centre, and then when I found some more week later, another 15, because I wanted an instant mint hedge around the bungalow. They were different varieties of mint among this. Some are more heavily scented than others and I cannot tell you which ones because I didn't think about it at the time. But needless to say, I've been taking cuttings of the heavily scented ones and I've got even more growing.
I hope I've given you some ideas
@Annb
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