You can pray any chaplet prayer using the Rosary by simply skipping the beads you don’t need or by saying some short Jesus affirmation like “Jesus and Mary, I love you, save souls” or the Jesus Prayer on the unused beads.
You can say the Chaplet of the Holy Face on the Rosary by skipping four beads in each decade, since it uses five groups of six beads each.
I have recently been saying the St. Michael Chaplet using just the crucifix and the first group of one large Pater bead and three Hail Mary beads. I just keep repeating those for the whole chaplet and say the beginning prayer, invocations to each group of angels, and the ending prayer on the Crucifix.
This keeps me from having to carry around lots of different chaplets.
You can also say the whole Rosary using the Jesus Prayer, the Hail Joseph, or the Prayer to St. Gertrude instead of the Hail Marys.
There are also some “Holy Souls Rosaries” prayers on Youtube where they use a special prayer for souls in Purgatory (not the St. Gertrude Prayer, something else) on the decades.
