Why not plan a reasonable party and don't do a big expensive thing?????
I see so many parents here and in real life who think it's a status emblem to have a party that costs hundreds of dollars and they just "have" to give out goody bags or people will think they're too poor to afford them or they'll think the parent just doesn't have good manners or too stupid to know they're supposed to give the attendees a present for just simply coming....
I see so many people on here who have NO idea what a normal birthday party should be like.
Go to the local park and take over the free covered picnic area, take over a group of benches, clean your house and have it in your backyard, ask grandma if you can have it there, reserve the gym at church or the big classroom by the kitchen at church. There are all kinds of free spaces to have a party.
Then buy a big sheet cake and a couple of gallons of ice cream. Paper plates and a roll of paper towels. Party complete. Less than $100 bucks. Even less if you make the cake yourself and put some cool frosting on it then sprinkle it with candy like plain M&M's.
Cheap parties can be done. YOU don't "have" to rent the stable or the gym or the park indoor facility.
If you do the party my way you can invite 50 kids, if they show up great! If they don't all show up? You get to have cake for dessert for a few days.
Parties don't have to be big huge productions. It's just a day to celebrate someone joining your life.