the sandbag allow players to collect skelies arrow,and will resist a creeper explosion,its have the same minig time than sand but can be only mined with hands if not,will became a normal sand block,cant be stacked 2 blocks tall,also will fall like sand,and will kill anything below.
Mud (grass means dirt,and notch means water bucket.)
  
this will create mud,a dirt colored lava,but is simple,when the mud is put will make heal everyone that fall down into it,but if you get your head covered in mud you will drown,and you will be unable to exit with armor,only without armor you will be light enough to get out,and slow player movement by half.
interactions:the areas that are touched by the mud will became dirt.
comtemplate my masterpice!
[Mod Edit: Warning Issued for Hate/Trolling and Flame-bait.]