Uses for creature loot

Creatures drop items 700–721 (#124): bones, fur, boar tusks, spider's silk, bat wings, feathers, grave dust, troll fat, lizard and drake scales, dragon scales and blood, wisp and fire essence, ectoplasm, amber, sapphire, ruby, diamond, orcish idols, frost giants' teeth. Most have no use yet: give them recipes (with the progression and crafting work) (reagents for spells, fletching, leather and scale armour, jewellery) and pools at the town exchanges so hunting pays.