|Photo Credit: ddeforest Vintage Wedding Confetti|
If you want to spend $16 USD (about £10) you can buy 500 of these from ddeforest on Esty. Or, you can do what I would do, which is to buy a heart shaped hole punch like this, from Amazon or any crafts shop and an old looking book from a charity shop, that usually will cost you £1. Most of the time you can find the good old classics, like Pride & Prejudice, very easily (I love it!!!).
If you want to make smaller size confetti, you can get this one or even this entire set (that includes also flower, star and butterfly shapes) and will still cost you much less. With this size you could even try to recreate the rainbow cards, replacing the butterflies for your sweet little hearts, stars or flowers!
Photo Credit: ddeforest Vintage Wedding Confetti