Write your own productivity tools. They may take time initially to write, but the pay off can be big over time.

Some tools that I've written that I use all the time:

• An SQL formatter.
• An automatic SQL generator: just select the tables.
• A simple task prioritiser, so I can see all my tasks in one go.
• A task reminder that nags me periodically.
• An app that takes delimited text and allows you to treat it like a spreadsheet and like text.
• A PHP/Javascript/HTML page formatter. A godsend when working with others' code.

I've written lots of other small tools in my time that have fallen by the wayside, but it was still worth the effort.