That's where the PicoPen comes in handy. It's keychain sized, so it's small enough to stay out of your way when you're not using it, but you can latch it to a belt loop, clip it to your keys, or link it to any of the loops or labels you can find inside your bag, so you don't have to worry about it getting lost or buried under everything else you're carrying. The cap is secured with a neodymium based rare earth magnet; you can take out and use the pen with one hand, but the pen isn't going to uncap itself in your pocket and leave ink spots everywhere. Because it's made of sleek, sturdy stainless steel, it won't be damaged easily by accidents or everyday wear, and because it takes the same refill cartridge as a standard multi-function pen, you'll be able to keep replenishing and relying on this pen for a long time.
Material: Stainless Steel
Size: 3-1/4" [82.5mm] long (including cap). Pen body is 0.23" [6.0mm] in diameter
Weight: 1/2 ounce [14.5 grams]