In order to keep our costs down and still have some fun family gatherings for the kids

I came up with the idea of hosting a potluck and having all the kids young and old drop off 3-5 pieces of art work (any medium) a few days before the gathering and my husband and I will display them throughout the house and create an art gallery with their work

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We are planning to host it around 6pm for dinner time and as it gets dark, we'll light some tea-light candles or twinle lights outside and give it a fun vibe in the backyard and place lounge chairs all around in small groupings for everyone to go out and enjoy the stars and a cool drink. I figure it brings the family together, gives us something share and have a good meal

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What are some things you have done or doing to keep the family entertained

and still keep the costs down?