Duct Tape

Effects

Familiars are stopped in the exact position they are when Duct Tape is picked up. Position of familiars can be changed by dropping Duct Tape and picking it up again.
Blue Flies orbiting Isaac move less relative to Isaac.

(Ball of Bandages) Ball of Bandages / (Cube of Meat) Cube of Meat: No effect at level 3 and 4.
(Big Chubby) Big Chubby: Will still charge forward sluggishly, but return to the same spot each time.
(Bob's Brain) Bob's Brain: Will still charge forward slowly, but return to the same spot each time.
(Gemini) Gemini: Will stay in place relative to Isaac, but the effect of chasing enemies still persists.
(Jaw Bone) Jaw Bone: Will still charge forward slowly, but return to the same spot each time.
(Little Chubby) Little Chubby: Will still charge forward, but return to the same spot each time.
(Added in Repentance)(Psy Fly) Psy Fly: Will stick wherever taped, but will still deflect bullets whenever possible.
(Smart Fly) Smart Fly: Will stay in place when orbiting Isaac, but will still pursue enemies.