I know this is titled 'Old Scanner' but what exactly are you using? Does it trunk? Is it crystal controlled? If youre really just looking to put it to good use and it has a search feature, I recommend using it to find new frequencies. We have no idea where you live so cant really recommend anything local, just rarely used national stuff that have been published for years.
If you havent done so already, program in MURS and FRS channels, many local CERT teams use them during emergencies. Also your local ARES/RACES channels. Local railroads are also good to keep in a radio in the event of a derailment. State DOT is also a must have for emergencies.
I also recommend national aircraft freqs
121.5000 - Emergency 'Guard'
122.4000 - FAA Flight Services
122.7500 - A-A Fixed Wing
122.9000 - Common CTAF
122.9500 - Unicom
123.0250 - A-A Rotary Wing
123.0500 - Heliports
123.0750 - Heliports
123.1000 - Search and Rescue
123.3000 - Gliders and Hot Air Balloons
123.5000 - Gliders and Hot Air Balloons
Many states also have what are referred to as Practice Areas for aircraft to perform acrobatic and training maneuvers. The freqs are not widely published, usually found in your local aeronautical sectional chart. Anytime an aircraft, civilian or military, enters a Practice Area they have to announce themselves and keep in constant contact with all other nearby air traffic.
There are also several 'flight test' freqs between 123.1250 and 123.5250 MHz. One of these freqs is 123.4500 which has been used for years by pilots for unofficial air-to-air over the mainland.