Hm...the toothpaste would be good for cleaning the metals though even that seems old and hard as a rock....wait.

[He runs up stairs, grabs one of the old toothpaste tubes and then goes into the kitchen to grab a cup before he runs outside and gets some water from the lake. From there he returns and takes the tube, cutting it open with his penknife.]

Now, I don't recommend brushing your teeth with this stuff but at least it can reconstitute it into a paste for polishing and cleaning.