6 years old
Game of catch with a golden snitch.
Ball or bean bag (golden snitch)
In a circle, have a person toss the bean bag back and forth in a group/circle. You can have Snitch practice by seeing if the newest Gryffindor seeker can catch the Snitch as it comes his or her way.
A variation I used was using one of those beanbag snitches, and we played "pass the snitch" ala "Hot Potato" style until there was only one child left holding the Snitch, and they won a prize(which in this case was one of those beanbag type Snitches).