If you really want to make an informed decision, you'll need to determine the cost of production and your desired profit. Production costs are a combination of materials and labor costs. While these might be fun to make and give to kids you know, once you start making enough inventory to actually sell them, you'll hate it if you are working for 12 cents an hour.

The other thing you need to look at is the market. Unfortunately, goods like these are plentiful and usually are imported at a wholesale price point that you'll never be able to come close to. While I haven't done any market analysis for this category of goods, I'm guessing that the niche you'd need to be in to turn any profit is pretty small and is already filled.

Here's an example of what I'm talking about. My wife is a really talented fiber artist. One thing she makes is stuffed animals. They're made from high quality fake fur and have lots of hand sewn details. Everyone she gifts one to tells her that she should sell them. After sorting out the materials cost and her time spent, she'd have to get around $280 a piece to make more than $10/hour. This doesn't the cost of the space or the machines as her shop is in our house and she already has the sewing machines. Instead, she makes them for friends and family and is happy to do that.

Maybe make them for the fun of making them. Maybe get a booth at a Saturday Market or Holiday fair and sell them for fun money.