I love the I Heart Organizing blog and I love washi tape so this was a brilliant thing! I also actually like white labels so a pretty cream washi tape would be fabulous for making labels!
I do like that little collection! The green stripes are very pretty.
Because of the surface of washi tape it's essential to use a permanent ink like a sharpie pen. Staedtler also offer permanent pens which are easier to get in the Fine Point in the UK than sharpie pens ^_^