The simplest plan now is to wait a week, then send an anonymous email to every newspaper in the country with a picture of the items over the day's newspaper and

The simplest plan now is to wait a week, then send an anonymous email to every newspaper in the country with a picture of the items over the day's newspaper and say "X bitcoins to this address for this item, Y bitcoins for this one". Reasonable prices, mind you. Aim for a year or two's salary for each thief maybe. The police and government would know that the investigation will cost more than that amount. They'll look stupid to pay the money, but they'll not even bother trying to recover even one of them.