Love my Sienna, but...

[DebW]

I do miss the venting, screened skylight window I had in the camper of my Tacoma, just a simple little window that let in light and kept it cooler. Toyota advises against having such a modification in the Sienna, but I have seen photos of far more extreme roof modifications than that little window (approximately a foot square).
I use my vehicle to travel to shows with my artwork, then as my short person's "home away from home;" so the pod-like aspect of the Sienna is an improvement over exiting the truck to enter the camper.
Does anyone have any comments or insights regarding my situation?
Thanks.

[brian_bp]

Do you mean a typical 14" square RV vent?  Those things are trash compared to automotive components (I know, I have them in my travel trailers), and there's no way I would cut a perfectly good vehicle's roof to install one.  My biggest concern would be sealing, although there's also appearance and finding a place to install it without cutting a structural reinforcement.

There are some venting accessories which temporarily install in the top of a door window opening; the window is partially open and closed up against them.

A real automotive sunroof would be a better bit of hardware, but they are not normally screened (and I understand the desire for a screen).

[DebW]

Well, I have the vent, but haven't had it installed although a reputable shop says it can be done. I had one in my aluminum camper for years that never leaked at all and only looked like a half bubble on the roof.
The issue of possibly cutting a structural reinforcement is significant. I also wonder if there are any wires or cables up there? I have seen photos of Siennas with the roof completely sheared off, one replaced with a pop-up roof, the other with a sliding window, sunroof, moonroof, whatever - it was big and it opened.
I have survived staying in the Sienna this spring and summer, but it would be so much more comfortable with that roof ventilation. 

[Qest T. Silverclaw]

My 2011 Limited has front and rear sunroofs.  The rear one is huge.