QUICK FIX - Baby room hazard.

Above is a picture of the problem in my sons room. There are three main issues right now. The phone outlet, with sharp corners, chipping paint under the windowsill, and the white extension cord running along the wall.Our home was built in the 1880's, we are in the process of looking for a new home, but until then I'm looking for quick fixes to these small problems that do not involve shelling