2nd thing i did i left one in a drawer for someone to open and see it and it scared them enough to curse.
3rd time i put one on the floor near my dad's friend and asked her what it was on the floor then i picked it up and acted scared by throwing it on her then she freaked out but then saw that it wasnt real so she took it with her to work at the hospital to play pranks of her own.
i saved the best for last...i placed 2 of them on the floor with 2 or 3 cheerios and a hidden camera then called my dad in to investigate and prank him, it worked great he thought they were real because we live by an ornage grove where they come out of and sometimes when someone leaves the back sliding door open they come in, so my dad bought some ZEVO to rid them and it works great. i edited the video and added sound effects of roaches squeels and death and whip lashe's to make it funnier.
email me for ideas