- https://www.jubeltage.at/lastminute-geschenk-muttertag-merci/
- https://www.tidbits-cami.com/valentine-yarn-heart/
- http://grietjekarwietje.blogspot.com/2010/02/niet-alleen-liefde-in-je-hoofd-maar-ook.html
- https://www.arstextura.de/2019/02/tischdeko-fuer-den-valentinstag.html
- https://www.artycraftykids.com/craft/recycled-cardboard-heart-decorations/
