So here is what we did. Two families with 2 year olds and infanta
We stayed in SLT Using VRBO
DAY 1: Inspiration point - great views of emerald Bay
Eagle falls hike: We didn't go all the way to the lake, just the falls, a nice short hike, on top of the falls you can go swimming
Calawee cove: In DL Bliss state park : Beautiful section of the lake, you can go swimming in the small beach over there
Day 2: Anderson Bike rental: You can rent bikes with trailers for the kids. Pretty flat trail, so anyone can do it. Stops along the way Included - Tallac Historic site (great views of the lake, plus museum if your into that), Taylor Creek visitor center: There is the rainbiw trail, which is .5 miles and has a tank where you can see the fish In the Creek. It took about 3 hours for the biking trip. When you bike, you don't have 2 pay parking at those 2 places.
Angora Lake: .5 miles hike, a lot of uphill, but the lake is beautiful. We came towards the end of the day, but I suppose mid-day it's packed. You can go swimming or rent kayaks/sups at the lake. Be aware the drive to get there includes a bumpy 1 way road for 2.4 miles. Althogh it's a nice drive
Day 3: We drove along the Nevada side to the Stateline lookout hike: A paved uphill hike (great for stroller! .6 miles each way) Very nice views at the top, with some tables and benches, great place for lunch
Trukee River rafting: Only for ages 2+. Nice simple float along the river for 5 miles. You can get out along the way and get In the water whenever you want. There are some small rapids at the end. This activity send pretty popular.
Day 4: Back to SFO, stopped off at the jelly belly factory along the way. We wanted to stop at apple picking but it wasn't the season yet.
A few notes: Lake Tahoe is beautiful, but they don't seem to have built it with adequate parking, so some places you need to get to early in the morning or late In the afternoon, or get lucky ( we did the latter 2:)).
Also, most of the parking is self pay, meaning you have to bring exact cash.
We went only weekdays, I can't imagine what the weekend look like :0
Hopefully one day I will make a complete trip report, but this is all for now. Thanks everyone for your advice!