Olathe Toyota is a sponsor here, and I bought my timing chain project parts from them. Very competitive prices even w/ shipping.
Rock Auto for basic parts like brake rotors, NGK & Denso spark plugs, Aisin pink SLLC coolant, etc. 5% off coupons are always floating around and this usually covers shipping cost.
Wal-Mart for motor oil.
Local dealer for Toyota oil filters, they include new drain plug washers and they're within <$1 of case quantity pricing on Amazon/EBay...and I get to look at new 4Runners while I'm there.