Only a few materials
1.5mm mild steel sheet 100x150mm piece will make two multi tools, a spare or a present?
Stencils - Sticky backed plastic or paper + glue
Spray paint - optional
Tools
General metal working tools -
Hammer
Files
Metal vice [Vise for our North American friends]
Metal cutting - I used a woodworking fret saw with a metal junior hacksaw blade
Rotary tool with cutting disc, grinding disc, sander bobbin
Drill + drill bits
Scalpel knife to cut out stencils or Silhouette Cameo CNC cutter
Etching tool - Optional see my video on metal etching to make your own one - easy to make