For in-store pickup only and with stock varying by ZIP code, Home Depot offers the Defiant 7-LED Headlamp 2-Pack (pictured), model no. HD13Q407, for $1.98. That's tied with our mention from two weeks ago and $10 under the lowest price we could find shipped for two similar headlamps elsewhere. It features seven LEDs and four light modes including white, red, green, and red flashing. It requires three AAA batteries per headlamp (included).
WD-40 is handy in a lot more situations than you likely realize.