What to do with my business cards

Where can I leave them - let me count the places
Who can I give them to?

1. Random shoppers in Target who make the mistake of talking to me - sorry nice lady!
2. Slip them inside books I send to charity shops
3. Hand out at book fairs - oh, I never go to any.
4. Drop by 'accident' - and watch them get thrown in bin
5. Drop by 'accident' and get fined for littering
6. Stand and wait for possible victims - get done for loitering with intent
7. Leave in coffee bars - oh I never go to those either

Could this be why I still have 493 of the 500 I ordered?