You need the item to be installed, a crystal bowl of water consecrated by moonlight, a sharp knife, and a linen cloth.
First slice your left thumb open a bit and let three drops of blood drip into the water. Wrap your thumb with the linen cloth and say these words.
Yo gabba gabba, banana fo fana, me so happy, ooh ah, only at mattress giant
Install the item as per usual.
Dump the water/blood onto ground consecrated by sunlight and the blood of a virgin pig. Bury the bowl and the knife nearby. Burn the linen cloth.
You forgot about wearing the Sacred Headband Adorned with a Foil Wrapped Rat. This is very important.