Small thematic boons for a level 4 party

My players just turned level four and are about to enter a temple where, unbeknownst to them, they will become the chosen of the ancient sages who built it. In liue of physical loot, I was thinking they would each be granted a small boon/ability. I'm trying to come up with thematic ideas for each player. Something that will fit well with their characters, feel exciting and useful, but not game breaking. Any ideas are welcome. Thanks! For reference these are my players:

Fighter, Rune Knight, Goliath (Cloud)

Comes from the frozen wastes. Pure bravado. Has appointed himself the leader of the band. Is threatened by anyone bigger than him and must constantly measure up, so to speak.

Cleric, Death Domain, Drow

Mysterious type in a plague doctor mask. Lost her faith in herself and the value of life after watching plague ravage her homeland and was powerless with all her skill as a physician to stop it. Now serves Jergal in keeping the balance of life and death and is rediscovering herself.

Bard, College of Dance, Wood Elf

Comes from a long line of performers. His entire family is part of a famous troupe. Was finally setting out on his own for the first time when circumstances swept him up into the party's adventure. He serves as the hapless every man on the team, constantly wondering why the bad things seem to happen to him.

Druid, Circle of Stars, Aasimar

He is Shaggy from Scooby Doo. That is his entire character. He's along for the ride and seems to have an endless supply of "herbs" for any occasion.