The most common definition of "commercial goods" I know is goods used for a business purpose. The only example of a "commercial good" given is "food storage items." Given the common definition, and without any context, that would mean a prohibition against the sale of refrigeration units to business customers. However since this is an LDS context we can presume that "food storage items" refers to goods purchased as part of the LDS family's year supply of household food storage. This does not help to clarify things unfortunately because again, in the common business vernacular, goods like food storage items used for household purposes are "household goods" which is the opposite of "commercial goods."Examples of fund-raising activities that are not approved include:
1. Activities that would be taxable.
2. Activities completed with paid labor, either by employees or by contract.
3. Entertainment for which the stake or ward pays performers for their services, when admission is charged, and when the intent of the activity is to raise funds.
4. The sale of commercial goods or services, including food storage items.
5. Games of chance, such as raffles, lotteries, and bingo.
Another possible definition for "commercial goods" that I can imagine is a good produced commercially. This would imply that it would be an acceptable fundraiser to sell homemade pies but unacceptable to resell bakery produced pies. This would also prohibit participation in the BSA popcorn sales since that product is produced commercially. The example of "food storage items" is again unhelpful here because while one can procure commercially packaged food storage items it is also a very common practice to acquire commodities and package them for storage oneself which would result in a "household good" even if some of the ingredients were of commercial origin.
There are so many mysteries and contradictions in the official fundraising policy that I could go on for many pages. But if I could choose to have just one sentence illuminated completely than it would be this reference to "commercial goods and services."