Some people were a bit concerned about the vocations poster from the Diocese of Raleigh depicting a young boy " "playing" priest and celebrating Mass. Frankly, I find nothing wrong with that. There seems nothing irreverent about what he is doing.
I think that is the important thing: what children might do, might not be perfect, it might be clumsy, etc., but it should be done with their level of reverence.
To this end, I received by e-mail a photo from 1958 of a boy "playing Mass".
Here it is:
My mother made the vestments –complete set; everything!
I’m looking for the slide of the purple vestments.
I remember my grandmother expressing concern that this playing at Mass might not be appropriate. I do remember her advising that we if we going to play Mass we should do so "reverently" and not "playfully".