We had a party for our son for just family. We did not have a theme and just invited grandparents and family friends. After about an hour he was tuckered out and ready for a nap. The family had a great time and we have some wonderful pictures.
Because our son's birthday is a week before Christmas the house was already decorated, but we put our little guy into a nice suit and had cake and ice cream.
We also had a small party with just the three of us to celebrate the actual day. I made an angel food/ devil food cake. It was fun and we made some wonderful memories.
Just remember the memories and pictures are for the parents, but they don't have to be elaborate, making the plans too complicated may just stress you out.
Good luck!