This is my wee project for the week. These little bitty hearts take just a little bit of time using just a little bit of wool but I like them a lot.
I use felted sweater material a lot in my crafting and inevitably end up with lots of scrap pieces, of all shapes and sizes. The teeniest pieces of scrap that can't be easily used in another project are cut up and made into stuffing, but the smallish pieces are sometimes made into these little hearts. (and then stuffed with the teeniest pieces of scrap)
I imagine them being surreptitiously slipped into your loved ones' pockets as a surprise "I love you!".