Quantity   Component name
1 × Damaged android tablet - free
1 × 12V to 5V step down converter - $5.85
1 × 1/4" 2'x4' Tempered hardboard - $2.03
2 × Scrap wire from old PC - free
1 × Super glue - $2
1 × 3.5mm audio cable - free (already had)
1 × Electrical tape - free (already had)
1 × 2nd smaller android tablet - $35
1 × Hot glue gun & glue - free (already had)
1 × Spray paint - $4
1 × Plaster - free (already had)
2 × Wire nuts - free (already had)
1 × Universal wire harness - $8