You could try to buy some of the non perishing items little by little and then put like 5 dollars here or there to the side to help with all the costs at once
Number one have it at yo place and just buy everything else that’s the cheapest you gonna get it because if you rent a place that’s gonna be more
Depending time of year and your location, an outdoor park space then you just need worry about food and decor which can be done on a reasonable budget
Lol assuming you mean baby shower. Decorations from dollar tree. Slider sloppy joes (With Hawaiian sweet rolls) bake a cake or cupcakes (cake mix) have cool aid or lemonade for drinks.