I'm defiantly liking the recipe book idea. With the Literjon, it could act in a similar way that a bucket does, for the stilltent you could ask to use some of the code from
CampCraft. I think we should ignore the energy caps until we know what they are, on the Sandsnork, I think it should be included as part of the stilltent. The Repkit shouldn't have to be an Item, but rather we can just pretend that you character uses it automatically. The Sinkchart should be similar to a vanilla minecraft map, but it should show biomes with quicksand and other danger in a different color than regular sand. The baradye should not be necessary in ssp, and in smp people will usually end up just giving each other their coordinates and putting coords of important places down on notepad, same goes for the fire pillar. The Paracompass should work Identically to the vanilla compass, The thumper should probably just spawn one Shai hulud then break into an item (so it doesn't start spawning hordes of the things). The filtplugs and recaths should be included in the basic stillsuit. I think that by default the player should be a freeman and have all the things mentioned below as well as a stillsuit once they spawn. The stillsuit should either occupy it's own slot in your inventory, or just be defaultly worn by the player and not be toggle-able so that players can still wear armors on top of the stillsuit. (Perhaps an incredibly rare and valuable crysarmor as well as crys weapons?)