Where do you buy your stencil plastic from ONLINE? I am from South Africa but I cannot for the life of me find a supplier. I would love to just buy it online if there are anyone that can provide me with a good supplier. Much appreciated!!!

Type cake stencils into your search engine,then comparison shop. Your biggest expense will probably be shipping.
Have you tried making your own with thin, food safe silicone sheets and an exacto knife? (or is that your question?)

dickblick.com - and I think they ship internationally

Thanks - I will try dickbick. I cut my stencils with my Cricut Expression.