Another thing for Happy Street that seems to really help is to always try to be crafting something. I always keep 3 buckets of water around, so I always have it without having to switch back to the forest, and because sometimes Pepin asks for an empty bucket in exchange for a Flooz.
As far as the Workshop goes, if you check the game often (like me) it's definitely worth your time to have a "Plank making session" and just makethem over and over for a while, since you always need them for upgrades or recipes. I really wish there was a way to make multiples, or multiple workshops. When I know I can't check for a while, I always make Rope (or one of the other 2-3 hour items like Glue/Bouquets) since Rope is needed for a bunch of other items. I always try to time it so I can make a black lotus overnight, in case I need a black belt or rainbow fish. I basically try to keep one or two of everything in stock.
With Nyok's house, I always try to make as much of the base dyes (blue/yellow/red) as possible, especially blue since those can be used for Lucky Spin tokens. I also try to keep 2-3 of the stews/soups in stock for deals, and usually make birthday cake or another 8hr recipe overnight. Same deal in the mountains, I keep 15 or so stone in stock then craft a few ovens or anvils (fuck dragon idols, seriously). Hammers And guitars are really a bitch to make, since they require rope and planks and rope takes wayyyyy too freaking long, it should be 1 hour max.
Anyway, it seems like a lot of work but if you make sure to always craft stuff you don't need you'll increase the likelihood that you'll have whatever Pepin is looking for. Sometimes I can cycle through 5 or 6 deals in a row and rack up a lot of flooz and gold. Once you cash an item in, I think you can make Pepin load a new deal faster by checking a friend's street, going to the forest/mountain and back, or exiting/reopening the app.
The only thing I ever seem to never have is Cut Moonstone
