Simon Jones has been crafting a useful collection of beautifully designed and inexpensive resources over at his GumRoad pop-up shop.
They can be downloaded as PDFs, and include a range of resources as well as display materials, promotional posters, and ideas for teaching particular units. New resources are added all the time, and prices start at just £1 and don't go higher than £5.
The design is excellent, and they encourage an enquiry approach.
Check them out now.