I thought I'd help, too! I've completed two Aspirations, and here's what I've learned about the reward traits:
Computer Whiz - Webmaster
Adds three new interactions to your computers,
"Internet Stalk" - Allows you to choose a Sim from a list of known Sims and learn all their traits. Takes about one hour to complete.
"Research Binge" - Randomly adds points to a skill/skills your Sim knows, takes about three hours to complete.
"Earn Money Turking" - Your Sim performs odd jobs on the web for cash. Takes about three and a half hours to complete, and seems to pretty consistently pay out between $1,200 and $1,500, but in one session my Sim earned $2,900 so luck seems to be a big factor.
The Curator - Appraiser
You can click on Metals, Crystals, Fossils, and Elements in this Sim's inventory to sell to the Simsonian Museum. I don't think that the money you get back is dependent on the value or rarity of the item you donate - I received $176 for a rare Plumbobus valued at $80, and then I received $223 for a for common Phozonite valued at $60.
And to talk about Livestreaming on the Pro Gamer career track, I started seeing slightly better donations after my Sim's Charisma skill went up. It needs more testing because it may have just been luck, of course. I also wonder if having a good Comedy skill level could effect how often your sim receives donations, or their value. Could be worth trying out.