I bought a manual paper shredder recently. It makes my life easier as I don't have to cut the standard 3mm strips by hand now (thanks to the tips by some local quillers on their blogs). Yay!
My mini manual paper shredder
Paper strips produced using the mini paper shredder
I spent a whole night arranging those strips with the help from my husband.
Notice that the edge of the paper strips is not as smooth as those quilling strips that we buy. But it gives a unique pattern. Anyhow, I guess I still need to buy quilling strips in future because there's only a limited variety of papers to choose from at the local stores that I always visit.