During a club meeting decorate special T-shirts to wear during these work sessions. Make up a blank sheet with rows for information such as name, address, amount paid, etc. and make several copies for each student. They get each sponsor's money and address, then during the your trip, mail each sponsor a brief message on an inexpensive postcard. This is an easy fundraiser that adds up quickly. Kids who are well known at their church or in their neighborhood will make enough for their trip deposit in a few weeks.
Parents can sell postcards at work, too.
On special nights people pay more for babysitting. The students work together to care for and entertain all of the kids, up to 3 kids per student. Car Washes PATA Director at CFHS-Houston,Betsy Arnold, reports that WalMart will match the amount kids raise at car washes in a WalMart lot. Many businesses with large parking lots will allow you to do this if you ask in advance. Give each student a candy-stuffed ziplock bag.