One of the features here on Real Life at Home, which I first started at Catholic Mothers Online (and then moved to Many Little Blessings, before all of the sites merged together), is a monthly printable page with activities for Catholic families to do together. This is an index of all of the past and current monthly activity printables.
Although some may need a tweak or two to some dates (if needed), they are not specific to the year that they were created.
Many of the pages contain mostly activities that would also be wonderful activities for non-Catholic families. You might just need to tweak some wording or activities to be more in line with your faith tradition.
Monthly Activities for Catholic Families Printables (Plus Two Christmas Activities Printables)