A fresh coat of paint on the door in an appealing color. Cost: Less than $10
A new good quality "welcome" mat. Cost: $10-15
A pot of fresh, healthy flowers.
New outdoor light fixture(s) with high watt bulbs.
(Or clean your current fixtures for sparkling glass and no cobwebs! Cost" $0!)
A new doorbell ringer.
New brass or iron house numbers.
$3-4 per number
If your walkway or front porch haven't been cleaned recently, pressure washing is a great idea. If you don't have one, try to find someone who will allow you to borrow theirs for the afternoon. You can also rent these machines at a reasonable cost.
Don't forget to keep the front lawn trimmed and the landscaping weeded and mulched. Trim shrubs if needed and remove hoses and other items from sight. If you have a porch, create a welcoming seating area using a rocker or small bench.
OK... outside entry complete? Let's move inside!