Here are a list of some of the more common irregular past participles along with their verb stems. Practice using them so it becomes second nature!
abrir abierto
cubrir cubierto
decir dicho
escribir escrito
hacer hecho
morir muerto
poner puesto
romper roto
ver visto
volver vuelto
When a prefix is added to any of the above verbs, the past participle still shows the same irregularities in its change. For example, deshacer becomes deshecho and devolver becomes devuelto.