Friends told me that one of the local garden has a plant sale at the weekends. They sell off plans from 50p that are still OK to plant out but may be past their best to be charged a full price.
In the mix was a 50p pepper plant. Re-potted & with a bit of TLC in the greenhouse, it's doing very well.
Same goes for my 50p fuchsia.
I've been collecting pallets for free from work to use in the garden. I painted a couple with left over paint from the garage.
The pallets made a stand for my collection of plant pots.
My frugal garden feature.