I'll jump on this band wagon

and take it a step further.
I like the idea of an 'Accessory Management Tool' - this tool would give me the ability to globally manage the accessories added to 'types' of products. For example I could filter my database for a product profile:
---Category = Video Sources
---Type = Blu-Ray
Then hit 'Select All' or individually select - then I'd be able to choose the accessories I want to add to all of these selected items at once: cables, IR emitter, etc...
This Accessory manager would work very well along with the MMPD Grid being able to display accessories as David described.