Secret Decoder Ring: B-E-S-U-R-E-T-O-D-R-I-N-K-Y-O-U-R-O-V-A-L-T-I-N-E
This secret decoder ring will let you send and receive secret messages without anyone being the wiser. No one will be able to decode your top secret messages unless they have a ring as well. This is the lowest-tech way of being a super awesome super spy.