Here's a showcase of some cool boom-compatible stuff I've made with voodoo dolls.   Tested and working in PrBoom+ and Eternity. Doesn't work in GZDoom because of the alternate collision code.   This wad contains 6 maps: demonstrations of a boom compatible combination lock, rocket wall, vending machine and inbetween maps showing the inner-workings of each.   Details for each and how they can be used in maps- Combination Lock: Rocket Wall: