Watch: (in either blue or silver, or even black!) $2
Wire: (guitar string, either E or D, the thinnest, dental floss, fishing line, or regular run of the mill string) E string: $1 D string: $3 (this is not my fault. The music store that sells these suckers individually is seriously that pathetic) Dental floss: $1 Fishing line: $1, String: No cost.
(The only reason string is free is because... its string... and it wouldn't look very impressive)
Total (E): $6
Total (D): $10
Total (DF): $6
Total (FL): $6
Total (S): $4
NOTE- SHIPPING HAS NOT BEEN CALCULATED AS OF YET. But I doubt it would be very much.