Great plans for a simple kids chair! I generally followed Ana's plans, but used a hardwood - Elm - that I cut on my sawmill. It looks generally like oak. It is heavier than pine, but should be more durable too. I'm 200+ pounds and have jumped on the chair with no issues.
I also used pneumatic brad nailer and glue for the back and seat slats. I highly recommend glue for this project! I am an avid woodworker with a garage full of tools, so honestly this took me less than an hour from start to finish. However, this was one of the most satisfying projects I've built in a long time!
Estimated Time Investment
An Hour or Two (0-2 Hours)
Finish Used
I eventually finished this with a custom stain I had leftover from another project and water-based polyurethane. Minwax Golden Pecan is similar, perhaps just a bit lighter than what I used.
Recommended Skill Level
Starter Project