Check the pds for various insurers, the tfs will be covered under contents, but it is best to specify them as a lot (for example, "transformers toy collection, value $xx.xx) and document the collection for your personal records.

Even if the total value is less than the minimum specified amount (Usually 5k) list it anyway. It shouldn't cost anything to specify items under contents insurance.

When i was doing insurance training for a job i made sure to find out this stuff for when i insure my collection.