These items make up the majority of magical items that exist in the world. Stronger the common items, these give you a real sense of magical power boost. Pretty easy to come across and make, these items cost on average of 500 gold pieces. 

Bracelet of Elemental Focus

wonderous, attunement

As a bonus action you can ignite your weapon with any element for 1 minute. It deals an additional 1d8 of the damage type. Cannot be removed.