What To Put On A 2x2 Flip?

It really depends on how much info you want to have on it. This is the basic template I use unless a coin is silver then I add the ASW and such to it on the back

I suppose you could do that with a printer if you had the template in your computer done right and have the pages pre-perforated with the exact size you need (6 different sizes though)

99.99% of coins have a KM# (Krause-Mishler) associated with it. I pulled that one outta thin air since I just did a quick mock up in Paint

Yep

Is there a pre-cut sticker sheet of 2x2 stickers that I can feed into my printer

Here I found a free software download for label and card making called TechnoRiverStudio 4.5 . You can find it at download.com

KM numbers are primarily as an identification reference for world coins; numbers are allocated in chronological order, to every coin type struck since 1601; each country has it's own series of KM numbers.

KM is short for "Krause-Mischler" - KM numbers are recorded in the Krause catalogues of world coins, of which Krause and Mischler were the original editors. The catalogues are phone-book-sized, one volume per century, and probably not worth acquiring if foreign coins aren't really your thing.

You can also find them on the Krause website, http://www.numismaster.com - to look up numbers, you only have to register, but to look up mintages and catalogue values, you have to pay a subscription.

As for what I put on my 2x2s:

Front:
- Country;
- Denomination;
- Date;
- Any special notes on the variety or subtype (eg. Type II, VAM 6b, etc.);
- Price paid (in code - no point in telling thieves which coins are the valuable ones);

Back:
- Catalogue Reference number (eg. KM# for world coins, Sear number for ancient Greek and Roman coins, etc.);
- the Sap Number - my personal database number; each item in the collection gets a unique number;
- Date the coin was acquired;
- Provenance - where/how I acquired it eg. "Billybob's Coin Shop", " ebay seller weluvcoins", "found in circulation". If a coin has older provenancce (eg. ex Eliasberg collection), that should be noted, too;
- the date the coin was put into the 2x2 (if that date was different to the acquisition date). This last one is handy for spotting "bad" 2x2s; if a coin starts to turn green and slimy after only a short time in a 2x2, you've got a bad batch of plastic.

I only collect Monopoly Money - Oops - I mean US coins. I store 90% of my coins in coin boxes for the 2x2 flips. On the top right corner of the 2x2 I write date and mint, on the top left corner I put the grade. Anything special about the coin I try to note that under the date.. ie 2005-P and right under that Oregon.
This way I can see this info easy as I flip thru the coin boxes.

I have a question probably for SAP. When you say price paid for a coin, do you include shipping cost? I do.

Neatly written

On Front

GRADExxxxxxxxxxxxxxxYEAR MINT
xxxxxxxxxxxxxxxplus (example) DDO RPM D/D Med Strike Full Steps D/S PROOF

Below on Bottom Front
VARIETY or Special Note (example)Lg Date, Carbon spot at 2 o'clock REV etc.

On Back
at bottom
CODE
date acquired xxxxxxxxxxxxxxxwhere bought and how much in my codexxxxxxxxxxxxxxx
(example) HCS4/8310.5
This would be Hazleton Coin Shop April 1983 for $10.50