Jumper, screw-on spikes (buy here), screwdriver, chalk/light coloured pencils, seam picker/anything sharp
I love spikes, they just toughens up the look! My friend Ella from ellajeanius.blogspot.com patted my shoulders once while I was wearing this jumper... and her palms were in pain, guess this could act as a protective garment haha!!
Let me know what you think about this DIY :)