For a quirky save-the-date, send playing cards to your guests.
You'll need several packs for enough cards with hearts. Print he date on paper and cut into strips. Wrap a strip around each card, securing it with a sticker. Slot into mini envelopes and post 11 months before your wedding.
Playing cards, £2.95, Premier Poker Chips. Paper, 27p per A4 sheet; stickers, £1 per sheet, Paperchase. Envelopes, £4.99 for 50, Hobbycraft