I have this sharpenign kit I picked up from Walmart - It has a stone but it is not very large. Thoughts
http://www.walmart.com/ip/Smith-s-Multi-Functional-Sharpening-Set/11047871#ProductDetailhttp://i.walmartimages.com/i/p/00/02/79/25/50/0002792550108_500X500.jpgSmith's sharpening set sharpens knives, scissors, shears and other tools. Includes a natural Arkansas stone, a diamond retractable sharpener and a 10-second knife and scissors sharpener.
Included in the set are the following sharpeners:
Diamond retractable sharpener - unbreakable, diamond-coated steel rod designed to sharpen all types of blades including serrated
Natural Arkansas sharpening stone - hones and polishes cutting edge of your blade at the same time; no other sharpener can perform both these tasks simultaneously
Smith's "10 Second" sharpener - specially designed "V" shaped cutting head with crossed carbide blades; puts a quick edge on your blade with just three or four easy strokes
Model: 50108