With an LLM Agent (specifically an agent, not a web page chat) I can go from idea to 50-80% execution in 30 minutes.

Then I can pretty quickly see whether my idea was a good one or not. It's so easy and quick to build tiny bespoke tools now, that I'm building them left and right.

Some stay with me and I use them regularly, the others I forget. But I didn't have to spend hours and hours building them so the time-cost is not an issue.