Like most developers, I have a number of projects in various states of planning and completion. Here are a few things that are on my radar.
DotNetNuke Modules
I'm currently looking at doing some work on the Gallery module (which hasn't had an update in quite a while). I'd like to do a number of interface updates to make it easier to use and use the built in power of the skinning engine more. I'd also like to update it to use some of the newer AJAX technologies.
I'd also like to lend a hand on the Blog module, which was based on a module I wrote a number of years ago now.
Car Computer Software
An idea that really interests me it putting a full Windows-based PC in the car to handle many functions (navigation, entertainment, Bluetooth handsfree, etc.) I've been keeping my eye on Streetdeck and Centrafuse. They seem to do a lot of the things I'd like to do, and have built in extensibility. I'd also be open to creating my own software from scratch if they don't work out.
Some of the things I'd like to add to Streetdeck include full gauges using the OBD2 port, a drag racing module to record and compare 1/4 mile runs, and fuel economy calculations.
Search/Replace Tool
I've always liked the search/replace functionality in Homesite. It's not the fastest way to search, but it allows you to find and replace text in multiple files in a directory easily. The problem is, you need to have a license for and load up Homesite.
Prototyping Tool
Over the years I've seen number of ways of mocking up websites in order to get sign off from clients before building the site. The more sophisticated ones did a great job of approximating layout and giving requirements to the developer, but required almost as much work as building the site itself. Then, if the client had changes, these were also a lot of work.
While I haven't had as much need to this tool recently, I'd like to build something that can quickly prototype a website for signoff. Honestly, I'm not sure there's as much need for it now that DotNetNuke has entered my life, so it has been put way on the backburner.