Head to this link if you want to create your own custom worded plunger, though you are restricted to 5-6 letters (lower case) 4-5 letter (upper case).
You could put in your initials, the game initials like IMVE, game titles HULK or KISS, or brands like Stern, Bally etc. There is only one font to use and from there you have a custom shooter knob for $40-$45 depneding on material selected.
To make the engraved section pop simply paint in the lettering and wipe off the excess with a cloth.
https://www.shapeways.com/product/HML8VKRJU/shooter-rod-knob-you-customiseHow to do it:
- head to the link
- top right will be a text box for you to type something in
- below the text box is a preview box in which using your mouse you will have to rotate the knob to see the view
- select the material in the top right
Note: this is currently on trial with Shapeways so not sure how long this will be available to do.
Have Fun