In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 

How would you create uniformity in the look of the bookshelf?
First you will want to get a fine grit sandpaper and sand every piece of wood to a smooth surface.  From there, you will want to obtain a stain or oil that will create a uniform finish when you apply it evenly and equally across all pieces.  Following that, you will want to let the wood drive in a well ventilated space before evaluating if the color you obtained was what you wanted, if not, repeat the staining process until happy.

How can I keep an ice pack from dripping?
Freeze a water soaked sponge in a ziplock bag.

How to close a pen after writing?

Put the cap of the pen back on it.