|By taking the relevant feat, you can craft magical scrolls, potions, and wands.
As per the standard feat description, potions may be crafted with spells up to level 3, and wands up to spell level 4.
To make scrolls, you will need to get hold of blank parchment. These are sold by a wholesale trade merchant, and can be found as loot.
To make potions, you will need to get hold of empty bottles. These are sold by a wholesale trade merchant, and can be found as loot.
To make a wand, a character will need to find an animal bone and an emerald and put them together. Any character with the craft wand feat is able to make a bone wand. Note that wands are not sold, but gems are. Wands cannot be recharged and will 'disappear' after you have used them up.
All of these craftable objects are created by casting the desired spell upon them in your inventory. Be aware that there are gold and experience costs associated with crafting, which will be higher for more powerful spells.