Identify Items for Inspection

We're looking for a way to identify items that need to be flagged for inspection on receipt of purchase orders.  We had planned on using receipt routing but some of the items already have receipt routing set up.  We're looking for a flexible means of turning the inspection flag on and off easily.  We may be able to use a category code on the item branch but I'd like to know if there are other methods in place that others have used.  We are a manufacturing company and often need to inspect items from different vendors before using them.

Thank you,