Regardless of whether your tape strip is positive or negative, it will attract a neutral object. Because the charged object causes the charges inside the uncharged object to separate a bit. If you hold a positively charged strip of tape near the wall, the charge on the tape strip will cause negative charges in the substance of the wall to move a bit toward the tape. At the same time, positive charges in the wall move away from the tape. The tape is then attracted to the negative charges in the wall.
Induction works better with conductors, since the charges in a conductor are free to move.
If you hold your tape strip near a metal object such as a refridgerator door, it will be pulled a bit more strongly than the wall pulls it. Hold the strip near your arm, and the pull is strong. Your body is salty water, you are a conductor. An expensive and dangerous way to do this is to string 9-volt batteries together until the voltage adds up to several thousand volts. The positive end of the chain will attract negatively charged tape and repel the positive.