For my son's 8th birthday he wanted a bowling party. So to be different from others we attended I decided to do the cosmic theme.  We had a total of 26 kids. For the invites I used the idea from familyfun.com.  I cut round circles outlined from a cd onto black card stock.  I then found a colorful clipart bowling crown and pasted it in a Word doc.  The invite read, each word in clipart colors: Meet us in the alley for (child's name) bowling bowl-a-rama, the kingpin is turning 8, pin the date, spare the time, get on track rsvp etc, don't be an absentee come show us your hook. I then cut it out in a square shape and taped it on one side of the bowling ball and stuffed it inside the primary colored cd sleeves. For decorations I bought 3 colorful bowling pin sets ($5ea.) at Walmart. I had my husband router out the bottoms and we stuffed candy inside.  Cotton was also placed in the bottoms to secure candy. I cut small thin strips of white paper and taped them to the neck of each pin for stripes.  I found cute colorful plastic basket/totes at the Dollar Store. I also bought shredded yellow paper there.  I stuffed each tote with the shredded paper, 4-5 pins and one bowling ball.  I then tied the tote shut with colorful happy birthday ribbon. Each tote will have 2 balloons w/alternating colors from the colorful theme.  I will place one tote on each table as centerpieces. I traced a quarter and colored black dots on each balloon. They looked like bowling bags with ball and pins. Really cute! Different color table cloths were used at each table. I found cute colorful balloon image plates, cups and napkins. I cut out clipart bowling pins and balls and laminated them and taped on tables. Just to add detail to table cloths.  I also made shirts for each guest. I got the shirts $2 ea at my local craft store. I used a colorful clipart image in Word and the front read: (birthday child's name) bowling bowl-a-rama and date.  The back had two pins with faces and read: pin pal (child's name).  The birthday child's back image read: kingpin with one pin. One sheet of transfer paper was used per shirt.  These looked great! I let the kids play 1 game of free bowl. Then a game of crazy bowl.  I placed numbers in a bag and let each pick.  They were then paired on teams by numbers.  When bowling they had to either dance or sit down. Great with music playing.  The teams were then awarded ribbons by 1st, 2nd or 3rd place according to total score. Then they played in the arcade. Afterwards was cake and ice cream. The cake was colorful with a ball and pins with stars.  As party favors the kids were given the shirts and a bowling pin from the tables.