My mother actually writes insurance, and I have her handle all of my policies. I called her last year and asked this exact question. The best thing you can do is take pictures, just to document that you actually did own that game - in case of total destruction (fire, tornado, etc...). Your homeowners policy should cover any item of value, up to the fair market value at time of destruction, up to the total insured value of your home. Now, if you have a 50 pin lineup, you probably want to write a separate policy and attach a rider to the existing policy, just for the value of those pins.
Basically - your house is insured up to $XXXX for loss. In the case of a total destruction of your property, you want to make sure that you have your home's contents insured for a value that would actually replace everything. For example, say you have a $200,000 house that you insure for a rebuild value of $275,000 and have $400,000 of total content insurance - then, if the house is destroyed in a fire you will have $275,000 to re-build the structure (or pay off the note, etc...) plus $400,000 to replace all of the stuff you owned that burned inside the house. So long as your collection wasn't a disproportionate amount of value vs. everything else in your house, you are fine.