What do you collect? Off Centers, Double Strikes, Caps, Clip planchets, Fragments, Off Metals, whatever? On what type of coin? Lincoln cents, Jefferson nickels, Washington quarters, etc? By dates or all of the above? Well, how about collecting a very under-collected series that stand to have great growth potential.
How many have a collection of War Nickel mint errors? These were produced from 1942 to 1945. How about just errors on the 1943 Steel Lincoln cent, a 1 year coin NOT made of copper (copper was needed for bullets during WW2).
Something a little cheaper? How about the 1958 Lincoln Cent, the very last year for Wheat Cent reverses or the 1959 Lincoln Memorial Cent, the 1st year of the memorial series.
For those of you who want a series a bit tougher & expensive, try Colonial Copper errors or Half Cent errors, Three Cent Silver or Nickel errors, a complete set of Planchets (unstruck) of every coin made at the U.S. Mint. Sets like the ones mentioned above are destined to be major auction items some day when you are ready to sell. These will be sought after by many dealers in the numismatic hobby as few will have seen error collections like these before.
Ok, you may want something more modern. How about Double Denominations with 2 different dates? Example: the 11c piece (Cent struck on a Struck Dime). The Cent may be dated 1999 and the Dime 1998, this happened in the very last part of the year, where a few 1998 dimes were left accidentally in a coin tote bin. Cent planchets were put in the same bin to be struck by the 1999 dies. Tough to locate and expensive, but they are rare.
What Iím trying to have you do is use your imagination when collecting. Donít follow what everyone is doing since that only means thereís a lot of that particular material out there. Try something no one else is doing. Something that will make your collection unique.
Good luck, have fun and take your time!