Here is a list of ideas to hide things rather than use a wallet:
- The Hidden Compartment Keychain
http://www.instructables.com/id/Paracord-Fob-with-hidden-compartment/
2. The Secret Coin
3. Cufflink Edition
https://www.etsy.com/listing/81212795/secret-compartment-cufflinks-real
4. The Smugglers Belt
http://gearhungry.com/2013/02/barrett-alley-smugglers-belt.html
5. The Bra Wallet