Helps tape loading
from Shareware Plus (Tim Harris)
Load tap files via the datasette port.
from Arananet Retro Products (@edu_arana)
price: 25 EUR
Plugs directly into PET IEEE-488 port, powered from rear datasette port.
price: 59.99 GBP
standard SD card storage, optional LCD display. Instead of or alongside floppy disk drives. Makes file sharing between the PET and the PC easy.
from primrosebank.net (Dave Stevenson)
price: from 65 GBP
Plug-in replacement ROM / RAM
price: 69.99 GBP
Card storage for the Commodore PET in the style of the 2031-lp disk drive
price: 120 GBP