Check out (individual - stickon)
Online Labels https://www.onlinelabels.com/OL28.htm?search=OL28&st=s (90 labels/sheet)
These come precut in sheet form and can be either clear gloss or matte finish for either Ink jet or laser printers.
If you do a search (Samples) at the top of the page, you can select up to 3 sheets for (free) evaluation and free shipping.
You can, for instance, print on a clear matte or gloss finish, place (the labels) on the L/P button and place a second (blank) clear gloss over it to protect it from wear (off)
They have a vast variety of sizes and shapes. For thumb piston, they have a .5 inch diameter label
https://www.onlinelabels.com/OL32.htm?search=OL32&st=s 154 labels/sheet, again available in clear gloss or matte finish. The adhesive quality is excellent. Found it helps to use a tweezer to position the labels on to the button without getting fingerprints on the back side of the label.
For draw knobs they have a 1 inch diameter label
https://www.onlinelabels.com/OL1025.htm?search=OL1025&st=s with 63 labels/sheet.
For example
Samples sent are a max of 3 sheets per type of label.
Also available is a printer template -
https://maestro.onlinelabels.com/designer/maestro.aspxI found a way of using this software which makes the job a piece of cake (or a bagel) which I also like with cream cheese.
And of course you can print in colour Hope that helps to give you some ideas.
Rgds,
Ed
BTW, my "method" for changing from one organ to another is to use a different (pre-labeled) LaunchPad for each organ, albeit slightly more expensive. But at $30 a piece for the Behringer model, not too bad, but very convenient with only a single USB (LaunchPad) connection.
This guy will accept a "Make Offer" of $30 which includes free shipping
http://www.ebay.com/itm/BEHRINGER-CMD-TOUCH-TC64-Controller-USB-for-DJ-Sealed-Full-Warranty-/172151820775?hash=item28150c51e7:g:3AMAAOSwc1FXY478I've heard some chatter about having probs with these, but the 6 that I have (and use) never had any issues. (Says he sold 754 so far, can't have had too many issues).
OTOH, I made a setup for a friend using a single (Behringer) L/P and only used the L/P to control the thumb pistons, etc, not the stops directly.