Ice Cream in a Bag. In a small Ziplock bag, combine: C half and half (milk works too), 1 T sugar, 1 t vanilla. Insert small bag into a gallon Ziplock filled with ice and salt. Shake the bag for five minutes. Remove the smaller bag and you have ice cream!
Awesome tool for road trips. This website allows you to enter your starting and ending destination and car make/model/year to calculate how much a trip will cost you in gas (calculating for regional gas price differences).