How about a new type of drawer that supports the storage of fluids, or an upgrade option for existing drawers that enables fluid support. Completely accessible through controllers.

And then one step further... Support for Thaumcraft essentia!

How about a drawer that can store fluids, but only if you put fluid container items (TE portable tanks, etc) into it first? And a Warded Drawer that only stores essentia after you stick a few Warded Jars into it!