Firstly, I managed to get my hands on 5 more tyres just by going to my local Hi-Q place and asking if they would let me have some. The guy was more that happy for me to take some off his hands as they have to pay to get them taken away. I only wanted 5 but he would have given me as many as I asked for. He even put them in the car for me too!
Secondly, kitchen & bathroom paint really doesn't come in a great range of colours so I've been experimenting and I am pleased to say that, whilst normal matt emulsion will not work, the Dulux colour mixing range will as it has a slight sheen to the paint finish. This means that you can pretty much have any colour you want and they will mix it for you. I've found that a tester pot size (250ml) is more than enough to give the tyre 2 coats and is also a cheap option. They are available in most Homebase and B&Q stores but I've found that B&Q are about 50p cheaper per pot (roughly £2.69). They also have an offer on at the moment where all paint is 3 for 2, and this includes the colour mixing range.
I'm still working on the yellow & white tyres (the rain isn't being very helpful) but this is my collection so far
I'm hoping to go and get some plants at the weekend so that I'll be ready to get them planted up when I go back to school next week.
The bowls to go inside of the sea, polar, desert & fantasy tyres were a bit difficult to find as they need to be so large but I managed to get some from a 99p store for just 99p! They are technically a salad bowl so have a slightly wobbly lettuce look to them. They are hidious but they do the job!
As I get them finished, I'll post another update showing the finished article and any other important info that I've discovered...