This is a great idea for a Birthday gift. A number shirt. There are tons of tutorials on craft blogs for the how to. If you don't sew you can still do iron on heat and bond and it will hold up for a party. Best to sew around the number though and really easy. Kids love having the number they are on their own special shirt and it helps them recognize numbers. For this gift I included a matchbox car for the Birthday kiddos along with their shirt. Total cost for shirts, supplies and matchbox was around 11.00 to 12.00. Not a bad deal for the budget, eh?