As a child I was always getting myself excited and worked up about things to come. I was the child that couldn't sleep days before Christmas and would get physically get sick with glee for family trips to Disneyland. I always enjoyed the excitement of waiting for those fun family days.
A great way to enjoy activities like this as a family is to make a Countdown Chain. Pick an event for the family that is coming up, whether it be a picnic, vacation, or a simple family movie night and figure out far away it is. Then make a calender/countdown chain for the special day (one link for every day, then brake off a chain for every day that comes and goes).
If you don't have a family activity planned then you can have each child make their own chain for their own activity. This is great too because every child gets to do their own and mother doesn't have to delegate who gets to pull the chain for that day.
You can even turn these chains into a more meaningful lesson too. If you want, have each child write a goal on each strip of paper before they connect them for the chain. Then every day to come till the big event, they have that goal to complete. One day to help a sibling, to clean their room, or help mom with a chore.
It will be a fun evening of crafts and family time, plus will let you see how excited you kids are for their up and coming events.