A couple of days ago, I wrote about labeling options for your homebrew.
Another option is a label printer.
I like the Brother QL-570.
Brother QL-570 Professional Label Printer - $51.95 Free Shipping
This printer uses the DK style of label rolls.
The 1" round labels work for crown caps.
Brother 1 Inch Round Paper Label (DK1218) - $18.99 Free Shipping
The 2 3/7" Continuous Film Labels are another option. These are cool because they are water resistant. They are made out of a plastic film not paper. Also, because it's a continuous roll, you can make whatever length of label you want.
Brother Continuous Length 2-3/7 Inch Wide Paper Label Roll (DK-2205) - $23.01 Free Shipping with orders of $25 or more.
The downsides of going with this type of labeling are- cost, the printer and labels are a bit pricey and black only printing. The upsides are- print the exact number of labels you need when you need them, no partially used label sheets, and some neat label options.