These blocks have velcro on the bottom and stick to the cargo mat. They are put together to form L shapes. You can use it to form borders to keep things in your trunk from moving around.
NewSouth multitap. https://www.newsouthperformance.com/product/tsi-multitap-hose/
Completely replaces the vacuum hose so you don't have to punch a hole in the intake manifold and looks stock.
I used the Chinese ones that replace one of the license plate lamps. Looks oem. Downside is that the light is slightly brighter than the other side. I just taped off part of the light with electrical tape. Worked very well. I wasn’t gonna spend $500 for the OEM one.