Packing for my Colorado trip, I discovered the drying hanger I made for my CamelBak liner rusted. This left nasty looking orange spots inside my liner. That's what I get for using a metal coat hanger.
From this post in the open embedded forums, I found that adding this line:
lists_dir ext /var/lib/ipkg
in /etc/ipkg.conf speeds up installing and removing packages. It also frees 500kB of main flash.
You can deflate a mylar balloon by inserting a straw into the bottom and pushing it up about 4-5 inches, past the internal valve. Why? Because you can store the balloons for another day. Most places that sell helium balloons will refill them for a fraction of the cost of a new balloon.