I don't know how many of you played it but if you remember The Last Of Us, You might recall that there was a nail bomb of sorts. It was created with a mixture and nails and tape or something. That type of bomb would be perfect maybe not roll around as much but be more placed in a fixed position, or something along the lines of that. Also it would be kinda cool now that I think about it if the bomb could be placed in the dirt like a land mine sort of. Things like this could be essential to defending your 'Base' or fortifications. I love the idea of traps in this game, it feels like this might be the best survival game out there once it shows all the traps and fortifications you can do, along with the game play itself and how things work. Another thing is that strings attached to these bombs in game or to act as a trip wire is another very crucial thing that could help defend bases or structures you would like to keep. Even if the person attacking can see it, doesn't mean they will always acknowledge it lol.