I don't train my team on "proper inventory management practices." My "inventory" is simple and practical. My "training" is straightforward and human-centered.
The most effective training method I've used is a daily checklist. Every morning, before we start a job, we review a checklist of all the materials and tools we have in the van. It's a simple, but crucial, part of our day that has made a huge difference. It's a way of teaching my team to be organized and responsible for their gear. A person who is responsible for their gear is a good tradesperson.
The "tool" is a simple, physical checklist on a clipboard. Many workers will just try to remember what they have in their van. But I've learned that a simple checklist is a massive win for my business. It's a "tool" that a tradesperson would actually use. It ensures that we don't arrive at a job and realize we're missing a crucial part or tool.
The impact has been on my business's profitability and my team's morale. By being organized, I'm able to save a significant amount of money on materials. I'll also explain that my team's morale has improved because they're not wasting time on the job site due to someone being unable to find a simple part. This "training method" has led to a more profitable business and much less stress.
My advice is simple: your best "training method" is a good dose of discipline. A business can't succeed without a great reputation. Stop looking for a corporate gimmick and start focusing on the simple, practical details. That's the most effective way to "train your team on proper inventory management practices" and to build a business that will last.