Canceled our Auto Insurance. Gave/registered auto to DD, She added my wife on her ins, I quit driving 2 years ago, then my ins co insisted I remain on the old policy even though I haven't driven in the 2 years, simply because I was Head-Of -Household. Saved $500 a year which includes paying my half of DD's. Auto insurance is an evil necessity. Watch those fees, they will getcha!
The other thing to watch for, Credit card usage fees, They'll negate any cashback you might get. Many gas stations have a cash discount, my ISP provider has.