Mar 20, 2020· 44. Train made out of Boxes ~ A fun and interactive party decor for a train themed outdoor birthday party. Choo choo! 45. Homemade Toy Car Wash ~ A car wash made for the toy cars out of a box and stuff out of the recycling bin and fabric strips. 46. Cardboard Surfboard ~ Pretend surfing with this fun cardboard surfboard. 47.