On Crimson Ingot you are able to craft more recipes than you can in Vanilla.
Find worms in Podzol. (Craft 1 Podzol --> 1 worm)
Make a saddle.
Make Twine from Hemp. Could be useful, someday... (Craft 1 Hemp --> 1 Twine)
Craft 1 'Baited Rod'. (Craft 1 worm + 1 fishing rod --> 'Baited Rod'.)
Cobwebs can be crafted by Cavilon followers. (Craft 1 string)
Extra nether brick blocks can be crafted by Netharna Followers by filling all Crafting table spaces with Nether Brick (item, not block)
Sod can be crafted by Wildaven followers.
Packed ice be crafted by Wintival followers.
Head in a Bottle