Have you heard of the Too Much TNT mod? Well, it doesn't matter, because you can use this command! The command adds 8 types of TNT from the Too Much TNT mod! Sneak while holding TNT to place it and throw flint and steel at it to ignite it. I'll put crafting instructions along with the source commands.
Have you ever wanted a Minecraft with only an X and Y axis? This command does that for you! Every block with a Z coordinate other than 0 is replaced with a barrier, effectively removing one dimension! Designed to work in Survival after command is activated. May cause lag.