I've had an odd modeling pet project kicking around for a while - making a 32mm base adapter for 25mm bases. I know updating isn't a requirement, but I really like having the extra space to play with (one of my Chaos Havocs is getting an Ammo Slave following him around :3).
I tried this out with a test-painted Dark Vengeance Tactical Marine I had lying around - didn't want to muss up one of Chaos' glorious Chosen on a test-drive, and it always bugged me how so many of the snap-fit Tactical's little toesy-woesies poked over the edge of their base. I'm pretty pleased with how he turned out!
I liked how I didn't have to redo the entire base, but I'm not sure if I'll use these for my Chaos guys - looking into flatter bases, the "pedestal" look is starting to bug me.
If you're interested in picking up some of these for yourself, [URL="http://www.lounge.belloflostsouls.net/showthread.php?54356-25mm-32mm-Base-Boosters&p=484811#post484811"]check out my post in the Bazaar.[/URL]