I think I found the answer.
TP-LINK-Wi-Fi-Range-Extender-WA850RE
This should do what I am trying to accomplish for around $20 and no wiring.
A few years ago the house was broken into (twice) by someone that knew we were on the road so I fixed a false floor in a closet and set up a security system DVR with cameras. There are no visible wires and would be just about impossible to find the DVR to steal the recorded evidence.
It works just fine but being under the floor the WiFi signal for internet is pretty weak so I want to boost it.
Hope I did not make this even more confusing but I think I have the solution so thanks to everyone trying to make sense of my problem and assist with this thread.
Oh yeah, we did catch a neighbors son stealing a dead battery I left out as bait and no more problems word got around we had cameras.