Here are some of the most budget-friendly choices:

1. Pine:

Easily the most affordable and widely available softwood. It’s lightweight, easy to work with, and great for furniture, shelving, or decorative projects.

2. Poplar:

A little pricier than pine but still economical. Poplar has a smooth grain that takes paint well, making it ideal for painted pieces or trim.

3. MDF (Medium-Density Fiberboard):

Not technically wood, but a great alternative for interior projects. It’s flat, smooth, and very cost-effective—though not ideal for outdoor use.

4. Plywood:

Versatile and inexpensive, especially for structural or large-surface projects. Look for cabinet-grade plywood if you want a nicer finish.

5. Fir:

Another softwood option that's affordable and strong. Commonly used for framing but can be adapted for various builds.

If you're working with a tight budget, starting with these materials can keep your costs down while still producing a quality result.