Portable applications that run from a USB device

This is something I have been getting into lately, one because on the computer repare sigs @ Cajun clickers I will have my anti virus and spyware tools to scan the computer for those type of issues,and also I have tools on disk so if they have usb 1.0 and not 2.0 I can scan faster and sometimes the apps do not like usb 1.0. The other day I got a call from Papi my Aunts father n law who also in Cajun Clickers who teaches a class on quicken,he has some laptops that he needs to be cleaned up and asked me if I would clean them up for him,I am totally honored to do this means so much to me to be asked to do this for someone ,because this is the kinda stuff I love to do for people.