The cover of Paper In My Shoe by cat yronwode has an example of a typical honey jar name/petition paper, with crossed names inside a petition written in the form of a circle.
Petitions can also be encoded or sigilized or formed in symbols. Some official Catholic sacramentals make use of this. Here’s the back of the medal of St. Benedict of Nursia.
The letters V R S N S M V – S M Q L I V B on the outer edge are the first letters of the words in this prayer:
Vade retro Satana!
Nunquam suade mihi vana!
Sunt mala quae libas.
Ipse venena bibas!
Slightly colloquial translation:
Step back, Satan.
Do not suggest to me your vanities!
Evil are the things you offer.
Drink your own poison!