Cash Cannon recently received a massive buff that doubles the scaling it gets from gaining money that I feel like most people have yet to pick up on. As someone who has been having a lot of fun with it, here are my main takeaways.
Early Game
Early Cash Cannon is great, but an early 
Money Tree is almost as important. If you get tree before cannon, you can stack its value while you look for cannon, so I put a lot of prio on the heal vendor. Day 1 it only has 11 total options and it also has 
Ganjo which can help pick up some early wins. While I wait for cannon to come online, I'll play anything I get to try and scrape by early, but I'm always leaning heal if possible to pivot to 
Textiles later. Burn can also be good for this if you can get 
Sauna.
For the level 4 B1-B2, I like upgrading tree over cannon. Cannon upgrade is great later, or if we get another B1-B2 event, but the early money from tree is just so useful to snowball into more value stacking items later and scale the cannon's damage.
Mid/Late Game
This is when we start stacking money like crazy. 
Loupe, 
Business Card, and 
Rewards Card are all mainstays of my stash. I also try and have a large value stacker like Money Tree, 
Vineyard, 
Landscraper, or 
Pawn Shop in my stash the majority of the time. When I see another one I like in a shop I cash out the one I have and switch it out.
As for the board itself, our only goal is to make cannon as fast as possible. I try to get Textiles and 
Ice Luge every run for this. For luge in particular, I try and plan ahead for it before I have it, stashing any ammo loot I get and prioritizing radiant enchant on cannon. Hero vendors can also have good options for speeding up the cannon. I normally prio 
Dooley and 
Vanessa for 
Fiber Optics / 
Metronome and 
Captain's Wheel / 
Rowboat respectively.
Late game, I'm normally starting each day with around 200g from the scaling, so at that point I pretty much buy sell everything as long as I have a value scaler in my stash.
