Good point. However, if someone had already accessed the home, through invitation or break-in, was aware of what was available to them in the home, they wouldn't need to bring their own supplies. They would want to implicate the parents. What better way than to use what was inside the home?
But how would they be aware of what was available in the Ramsey household before they entered the house? How? And what exactly would be their intent? If they wanted to railroad Ramseys for some reason why just not murder the girl, do the fake staging and get out? Why even bother with the note?
On the other hand, if they wanted to kidnap JonBenet and failed for some reason, why to do any staging and redressing and why even bothering with that note again?
If someone had access to master keys, couldn't they gain access easily, with no sign of break-in? Or, am I missing something? Was there some special lock immune to master keys?
Okay, so we have here a villain, who hacks the computers, bugs the phones and obtains the master keys. He entries, manages to not get lost in this big house with a complicated layout and borrows himself the flaslight. Then he wakes up JonBenet, feeds her the pineapple in the breakfast room and helps himself with some tea, then they go back to the JB's bedroom, the villain whacks poor girl in the head (blood found in the bed), then he brings her to the basement and assaults her with the brush handle. He is a darrrrn neat villain, so he puts the remnants of the broken brush back into Patsy's paint tray, where it belongs. Then, despite wanting to implicate the parents into a brutal crime, he wipes JB's crotch clean, redresses her into some fresh panties (did he gained the knowledge about the package of the 12 Bloomies in the basement from the computers or from the bugged phones?) and longjohns, wipes the brush handle and finds himself some rope and duct tape. God only knows how did he knew where to find these items, and he had to knew, as there were no friggin' sign of searching in the house. And, ya know, even if he's a neat planner, he still gets the trhrill from being unsure if he will be able to find everything he needs in the Ramseys house. So the villain makes the garrotta, strangles JB (carpet fibers on JB and the urine stain on the basement carpet) and then merrily makes his way upstairs, where he sits comfortably in one of the rooms, writing the ransom note, a totally useless ransom note, with a borrowed pen, on a borrowed pad, considering in the process few different opeinngs for his letter. After he finishes, he puts neatly the pen back in its place, in the mug on the shelf, near the telephone, because he is some kind of a detective Monk of the criminal world, obviously, he is so obsessed with order and neatness. Then he rips the letter out of the pad and spreads on the steps of spiral staircase, and then he comes back to the basement and, for some reason, wraps JonBenet in the blanket (there was no urine on the blanket, AFAIK, so her longjohns had to be already dry at the moment) and draws the heart into her palm. Then hegoes back to kitchen, wipes the flaslight clean and he's gone. All of it without waking anyone at home up. Do you see how absurd this scenario is?
Please enlighten me (I'm not being sarcastic)... how is it known they didn't bring flashlights? What about night-vision goggles?
In the kitchen there was a flashlight, belonging to the Ramseys, wiped clean, inside and out, battery included. Either the intruder used it (but why would he be wiping the insides of it?) or someone went overboard with the staging.
If they never intended to kidnap her and, again, wanted to implicate the parents, what better way to do it? Leaving her in the house would have been part of the plan.
But who would want to implicate Ramseys and what for? As far as I know the LE never found anyone hating them that much.