I am using a cheap HP Inkjet printer.
JOYEZA glossy vinyl sticker paper for the label.
Epson matte legal size presentation paper for the insert.
I designed the insert and cartridge label (obviously not the artwork).
I use Avery online design tool to generate a PDF for the label. I usually do 3 to a sheet in case I make a mistake cutting. I print the PDF with Adobe Acrobat. Avery design tool helps set the labels to the correct size.
I cut out the label and insert on a plastic cutting board using an exacto knife. I use a large metal ruler as a straight edge.
I use a 3mm corner rounder on the labels.
Thecoverproject.net forums have tutorials that are helpful.
YouTube has video tutorials that can be helpful.
After some trial and error it's very easy for me to make a cart now.
With the current high price of authentic carts, I mostly make my own now.
I don't care if the cart is authentic. I care that it works.