If you would like to complicate your circuit slightly but add significant appeal, I would add a Dekatron which rotates with the seconds.
Dekatrons have 10 steps, so it would take 6 revolutions to complete a minute. But the rotating effect, in my opinion, is *far more appealing* than a plain blinking LED or neon.
Another way to display the seconds, is to use a "magic eye", opening and closing in a heart-beat fashion. Again, very appealing visually.
I have done both approaches.