used Wooden Pallets

Also looking for 'spare' wood.

I'm currently trying to make floor sections for a cat rescue charity I volunteer at. They have about 400ft2 of gravel under their pens, which the cats don't like too much, and makes cleaning trickier. They also have a budget of less than £0 after paying for new structures and expensive op.

I've split up some pallets, to make some flooring sections, but that's slow and a lot of the wood isn't useable. I've also found some old boards of mine, and had some off-cuts of MDF from Homebase, and have been told to pop back before 'collection day' next Friday, for other waste boards.

Also looked into OSB panels as a cheap solution, but not as cheap as I expected.

Any other thoughts, suggestions for floor sections, perhaps 4by2 foot?

I'm going to pop to B&Q later and ask if they have any spare waste wood. Will take the guide dog we are currently boarding for a small amount of emotional blackmail

Also, it would be a nice surprise for the lady who runs the charity if I could paint all the boards purple (she's a bit nuts about purple ???), any thoughts or tricks on getting/making cheap purple paint?

Any thoughts or ideas welcome.

Many thanks.

Our allotment site is close to a large local builders merchants. They are quite happy to give us pallets for free. They end up burning them otherwise.