So far this is all I have spent
Ergon gc3 grips/bar ends - $45

Cheapie wired computer - $20

Flower stickers - $3

Saddle bag - $11

I am considering fenders and still contemplating thinner,slicker tires but otherwise I don't plan to upgrade anything until parts start breaking. I did replace the stem and seat but they were swapped out by the bike shop so didn't cost anything.