Which shin tools?
As far as I know three of the tools can be made from two found parts, the Paterson Squeege and the chemical stirrer both of which are plastic, this leaves just one possibly aluminium tool which is a directional mike I think, no doubt someone with more knowledge will correct me if I am wrong.
Darts, spikes and shoulder studs can sometimes be found for sale on this site and the found parts for the shin tools sometimes come up except the directional mike thingy.
Craig