Age some of your accounts, and/or eliminate some of your newer and useless accounts to bump average age. Garden a little, and apply some of that lube to at least one card per month. Show a small balance. Let them earn their pennies in interest.
$XXX,XXX in credit lines.
Multiple months in free credit reward vacations.
$X,XXX in bank rewards in only 12 months.
I like FREE...
800+ FICO.
Making all numbers dance on a financial ledger.
Abuse that score responsibility.
Take nothing I say as financial advice. DYODD.