Bard equipment

A bard's equipment is largely dependent on the role they want to play in a party and the nature of their build.

Healing Equipment
Every bard who uses healing spells will want a good Devotion or Potency item. Potency is preferred, since it could apply to any damage spells the bard may have. Since a bard's spells do not reach above level 5 (6 eventually) a bard does not requires as high a level boosting item as a pure caster might.

Generally bards should carry whatever wands are available for healing status effects.

Bards with strong UMD scores should carry any and all scrolls that they think might be useful. Scrolls for Cleric spells like Raise Dead and Heal are especially common and useful.

Weapons
Rapiers and Shortbows are probably the default weapons for most bards. Bards who multi-class or take other weapon proficiencies will tend to favor whatever weapon best suits their needs at the time.

Repeating crossbow is a popular choice for bards with a high dex who don't want to get into melee combat because it provides a decent ranged attack with only a one feat commitment.

The quarterstaff is the only two-handed weapon a bard is natively proficient in and thus can be popular among bards looking to take advantage of a high strength.

Armor
Most bards prefer light armor because they do not suffer arcane spell failure while wearing it. Which type of armor depends most on what the bard's dex bonus happens to be. Mithral breast plates and Mithral chain shirts offer the best protection with adequate dex.

Some bards prefer to wear robes and armor bonus bracers. This is a good choice for a bard with an extremely high dex, but is also good for a bard looking to use Arcane scrolls, because scrolls will trigger arcane spell failure from armor unlike a bard's native spells.

Shields are uncommon for bards but not unheard of. Mithral light shields are ideal as they have no spell failure chance. But some bards will simply un-equip a shield when preparing to cast a spell or use a scroll. It certainly doesn't hurt to have one in your inventory in case you need it.

Spellcasting Equipment
Most bards will want to find an item that grants a DC bonus to enchantment spells. And of course items that boost spell points are appreciated.

Bards do not have a rich selection of damage spells so items that boost damage are not commonly used.

Many bards with a strong UMD score will carry a wide selection of arcane wands and scrolls to use when appropriate.