I love Wollfiller and their ideas. My best woolen cardigan has prolonged its life several years because of their ideas.Today Design Sponge feature a series about DIY hearts one of them is how to make woolen hearts for valentine day. Super idea why not take your loved ones beloved old sweater and add a heart any color any shape – just for the love. Old or new sweater will still be full of love. Take a look here at Woolfilller or over at Design Sponge.