Near Riverwood there is a chest and a stone. These items were given by Akatosh, the father of all dov. 

Here's a list of the current modifications of the Gifts of Akatosh. 

Stone of Akatosh: 
Resets all your skill points to 20, so you can re-learn your skills. Re-learning your skills lets you level higher and gives you additional perk points to use. You will not be able to use a new perk point on a skill until you have met the required level to achieve that perk, so use the stone wisely. (Save before use at a minimum). 

Ring of Akatosh: 
Magic from all schools costs nothing to cast, immunity to poison, disease, fire, shock, frost, and magic. 
(This ring with going to be "The One Ring" from LOTR. Someone beat me to posting the mod, so I became bitter and made it an overpowered ring instead. That's what started me down this path in the first place) 

Amulet of Akatosh: 
Sneak fortified 100 points, archery fortified 100 points, Dark Brotherhood backstab bonus, wearer moves silently and can breathe underwater. 
(This amulet was going to be called "Amulet of the Sniper Assassin" originally) 

Divine Craftsman of Akatosh Amulet 
Smithing fortified 400 points, enchanting fortified 400 points, alchemy fortified 400 points 

Armor of Akatosh (Robe, Light, and Heavy): 
600 base rating, +400 to health, 400% health regen, 400% to light and heavy armors. 

Helmet of Akatosh (Circlet, Light, and Heavy): 
450 base rating, +400 to magicka, 400% magicka regen, 0 cooldown time between shouts 

Gauntlets of Akatosh (Gloves, Light, and Heavy): 
450 base rating, One-handed, two-handed, and unarmed damage fortified 400% (You know you want to punch a dragon to death) 

Boots of Akatosh (Fine, Light, and Heavy): 
450 base rating, +400 to stamina, +400 carry weight, 400% stamina regen, no fall damage (Needed for when you use your portal gun). 

Shield of Akatosh (Light & Heavy): 
Forify blocking 100%, blocks all magic (via Greater Ward), lights enemies in melee range on fire.Blocking magic and lighting your enemies on fire only occur when the shield is raised. 

Skin of Akatosh (Spell): 
1000 armor rating, +400 to magicka, health, and stamina, 400% regen increase to magicka, health, and stamina. No fall damage, no cooldown between shouts. Lasts for 30 minutes or longer, depending on perks in Alteration. 
High mana requirement, you'll need to use the ring to cast this spell. 

Fury of Akatosh (Spell): 
200 irresistable damage, 200 shock damage, staggers enemies and throws them around when they die. High mana requirement, you'll need to use the ring to cast this spell. 

Arrows of Akatosh: 
100 base damage, 4 times faster travel than normal arrows. Can knock opponents around. 65535 arrows are available in the chest. 

Bow of Akatosh: 
400 base damage, absorb 100 points of health, stamina, and magicka. Draw speed 2x fast than other bows. 

Axe, Sword, Greatsword, Warhammer, and Daggers of Akatosh: 
400 base damage (Dagger base 200), 150 points fire damage, 150 points shock damage, victims are paralyzed, chance to turn undead. 
Now also strikes fear into the lucky enemies you haven't killed yet... 

Staff of Akatosh (Enchantment name "WizardStick"): 
150 points lightning damage (for 6 seconds), 100 points fire damage (for 6 seconds), 100 points frost damage. 
Projectile fires at extreme speed, no more leading the target, just point and shoot.