I have 9 raised veg beds and its very muddy in between them (ie where you walk). The wife wants me to put down something in between so its cleaner/easier for moving about.
What would you suggest?
Depends on your budget. Chipped bark, slate chippings or gravel laid on a weed suppressing membrane. If you can get some on freecycle, old slabs would be good too.
Some old carpet laid upside down. Last quite a few years and should be able to get it for nothing. Not the foam backed stuff though..