First impressions are lasting impressions. You will want to make sure that buyers comparing your home to others are left with the best possible impression. There are many things you can do which does not mean you have to spend a lot of money.
Exterior
For night showings, all exterior lights should be turned on
House exterior in good repair
House number easy to read
Eaves troughs, down spouts and soffits in good repair
Garage/carport clean and tidy
Litter picked up
Cracked or broken window panes replaced
Lawns and hedges cut and trimmed, garden weeded and edged
Walks shoveled and salted
Boot tray inside front door
Doorbell and door hardware in good repair
Porch and foyer clean and tidy
Replace burned out light bulbs
Interior
Chipped plaster and paint touched-up and repaired
Doors and cupboards properly closed
Leaky taps and toilets repaired
Burned out light bulbs replaced
Squeaky doors oiled
Mirrors, fixtures, and taps cleaned and polished
Seals around tubs and basins in good repair
Floors cleaned, garbage containers emptied
Inside of closets and cupboards neat and tidy
Appliances cleaned
Countertops neat and polished
All lights turned on
Air conditioner turned on in warm weather
Fresh air in house
Fireplace lit in cooler weather
Halls and stairs cleaned
Drapes opened during daylight
Carpets freshly vacuumed
Fresh flowers in various rooms
Jewelry and valuables locked safely away or taken with you
Valuable property, such as objects of art, vases and figurines out of reach, out of sight, or locked away
Pets absent, where possible, or contained during the showing, and litter boxes clean
If you are a smoker, there are many things you can do to ease on the smell of smoke