Hiding wires for prop displays

Hello all
seems I've benn all over the place posting about prop making lately. Trying to just focus and finish one! lol . I'm starting to display some of the smaller props I've built namely my arc reactor and Tessaract. Both are being plugged in to the wall. How do I hide the cords? I was thinking of painting the cords th wall color to mask them a little. Any ideas?

 

Show us some pictures of how you will have them displayed and we will be able to better advise you on what will work for your specific needs

 

How about a surface mounted raceway?