Lead tape for tennis racquet frames for seat belts and hose clamps. SS insect pins for wire wheel spokes (available down to 0.27mm!), electric shaver screens for intake venturi screens, wine bottle cork lead sheet (well, they used to be lead) again for hose clamps and seat belts. In stead of guitar strings (too stiff) I wrap 0.8 or 1mm solder with 0.3 mm solder for reinforced hoses in 1/12th.