Believe it or not, the best way to fill your compendium of crafting recipes is to continue to do more crafting. As you work your way through the crafting recipes, you'll be inspired to come up with more. Once you craft a recipe for the first time, you'll be prompted with three thought bubbles, each showing the silhouette of a new recipe you could learn. Some of the items, like beds, are obvious, though you won't know the design of the item exactly until you select it.

These presumably come up every time you craft a recipe you have not previously crafted until you've unlocked all of the items in a particular furniture collection. You also won't be able to get new recipes by crafting the same ones over and over again, which means you'll want to try out every new recipe you come up with if you hope to complete your furniture collections.

As you get more recipes, you'll also need to make sure you have the appropriate number of resources available to craft them. It may be worth it to upgrade your tools as you go to make chopping wood and breaking rocks much faster.