- Bells on the arms
- No musician in sight
- A recurring theme of disciplinary panels and authority
Certainly bells on the arms look good visually (even if they don't add much to the sound) and in any fantasy where you don't actually have to perform, a musician can be a needless complication. And Morris is an anarchic activity which shows up well when set against authority figures
One other thing I found on the Cloggies' Wikipedia page, is that there was actually a real side called the Cloggies, formed in tribute to the Bill Tidy cartoon. Their finest hour, bringing to a close a student performance of John Milton's Comus, got a snotty review from the Guardian theatre critic, which the lads quite rightly regarded as "a complete vindication of all they had stood for".
Comus, of course, is the perfect vehicle for any celebrity Morris, as it was performed in Cambridge in 1908 by a team (left) including the poet Rupert Brooke and the mountaineer George Mallory (more details here).