If your project includes aluminum ribs like the RV series, you will want an extension for your deburring tool. It definitely improves the hole (pun intended) deburring experience.
Click this link for more details:
http://websites.expercraft.com/rzbill/index.php?q=log_entry&log_id=6651

I improved my deburring by using a threaded drill bit in the deburr handle.
More details are here: Click on the link.
http://websites.expercraft.com/rzbill/index.php?q=log_entry&log_id=6652

If you save the crates your wing kit comes in, you can build most (if not all) of the wing cradle described in Van's plans. I used the crate lumber plus a couple of partial sheets of plywood and particle board I had laying around. Given a little more industrious use of the crate lumber, I could have gotten by without the spare plywood/particle board.
Click on the link below to see pictures of my cradle:
http://websites.expercraft.com/rzbill/index.php?q=log_entry&log_id=6642

On the second wing I drilled, I figured out a nice way to hold all the W-423 splice plate parts in alignment prior to drilling. It is a tricky operation because there are three parts that have to be held in alignment without cleco's prior to drilling. No special stuff to make, just an application of tools and scrap you probably have already.
See the method here:
http://websites.expercraft.com/rzbill/index.php?q=log_entry&log_id=6648

Here is how I built my balance. I think it works well enough to share my idea.
http://websites.expercraft.com/rzbill/index.php?q=log_entry&log_id=7706

I made some inspection covers with clear windows that can be used during preflight. See them here:
http://websites.expercraft.com/rzbill/index.php?q=log_entry&log_id=8233

I took a scrap of hardwood and drilled "one size over" (meaning #30 hole for a #40 bit) for all the commonly used drills and rivet sets. Very handy. You can see I have multiple #30's for instance. A bare one, a drill stopped one, and a threaded one.

Another handy thing is an item I stole from my wife. Its an ancient metal roll around table she had in her college apartment. Well, it serves to hold my clecos, rivet squeezer, bucking bars and rivet trays.