Cannot find empty watercolour pans in Singapore. read on the net somewhere on how to convert legos to watercolor pans. I used pliers to twist out the insides of the lego and used a dremel with a grinding bits to smooth it out. Now if I need an additional color or two for plein air class, I don't have to bring the whole tube or another palette. Even with the insides gone, I can still stack them up like normal legos (though it's a little bit loose) :)
