Fizzer is giving away FREE personalised postcards, including postage! Just create your postcard on their site and use the code FIZZER0620 to get it sent out for free. You can add any photo you like and include a personalised message.
For yours, click 'GET FREEBIE' and create a Fizzer account. Then just create your postcard (after each part of creation, click 'validate' to go to the next step'. Then when choosing which payment option, just type in the code FIZZER0620 and it will come up as free. Just enter the receivers address and they'll receive the postcard shortly.
You can also do this is their app.