I have kerises in every corner of my room literally, but they're safely packed in cabinets and cupboards, and in their individual pouches, so grabbing them is going to be difficult at short notice. And further more, I love them so much I'd rather use my fists.
However, I do have a 'surprise' hanging right next to my bed. I just need to reach out 20cm and I'll have it in my hand. Its a 15th Century hand-and-a-half repro with a hardened tip meant to defeat plate armour.
A Tinker blade.