I never have such a thing. I am even scared of having Trash Cans standing about
I have my ME network set up with automatic overflow handling using Priority instead. This way I never have to interact with the thing that deletes the excess items and therefore no mistakes.
Example:
http://forum.feed-the-beast.com/thr...guide-collection-etc.42664/page-2#post-587528
I dispose of items in a similar way, where everything enters my ME system through an interface and it is the overflow items that end up being junked, but currently the only block that actually gets disposed of intentionally is Stone, for the sake of producing scrap and singularities. I might have some other "junk" still set to be disposed as well, but it's specific materials that are being farmed such as mob drops and the like that ended up overflowing 1k cells. I've since started piling those items into DSUs.
Right now I have DSUs for everything that I have accumulated a lot of, a few 64k cells for broad categories of items (e.g. one for ingots, one for gems and other resources, one for ores, one for mob drops, etc.) that I don't have enough of to be worth sticking in their own DSU, 1k's for stone and cobble (overflow cobble goes to an autocrafter that compresses them), and 4k's for the miscellaneous random junk that I end up acquiring (originally were 1k's). These "miscellaneous random junk" cells are in the lowest priority drives. If one fills up completely (red light) I will usually throw it in an ME chest to see what's filling it up. If it's many of a single item taking up tons of space, I'll throw down a DSU for it. Afterwards, I'll throw the full cell into an IO port to redistribute its contents. If this keeps on filling other cells, I end up considering upgrading the cells to the next tier (1k to 4k, to 16k, etc.), which I can easily afford at my current point.
For certain things I might set up the storage at a remote connection (connected via quantum bridge) instead of within my base. So I have one drive for the Botania flowers in my Botania room, and the drive for my Thaumic Energistics essentia drives in my Thaumcraft room.
My base also looks ugly as crap and is disorganized as hell due to the gradual way I built it up from the start of my world, although I try to bunch things together where possible. So, for example, my ore processing is in one area, my IC2 stuff is mainly in one area, power gen in one area, etc. I also move stuff around where it's convenient. So, for example, I started Botania just for converting redstone to glowstone, and the setup was in my base, but I have since moved the setup to a separate area once I decided to develop it, which I access through teleportation. I also moved my automated AE inscriber setup from floor B1 (the main processing floor with my ore processing, most of the autocrafting, and IC2 stuff) to my lowest basement, which I think is B5 (joining my BC assembly table and my automated AE pure crystal growing setup).
Basically, my really derpy main base is:
3: RFTools teleport/dimension room (currently just has one machine to feed unknown dimlets to, a drive to store them (separate from my main ME network), and a teleporter (set up for two-way travel to any of my other teleporters).
2: Vanilla enchantment table, anvil, TiC stuff and Mystcraft stuff.
1: Mass fabricator setup, MFSU charge pad, an armour stand, thermal expansion machines, and QED. Most of my other crap has moved to other areas.
B1: AE2 main storage, random floating crafting CPUs, molecular assemblers, ore processing, IC2, etc.
B2: Power generation infrastructure, stuff that processes sludge and sewage, automated Ender IO alloy smelting, Thaumcraft treasure bag opener, and a system that filters the loot from my mob farms (deletes damaged equipment, sends enchanted equipment to be disenchanted, and sends the rest to storage).
B3: Water and steam tanks, DSUs, quantum ring, and a portal to Runic Dungeons (I plan to use the room for other dimensions such as TF; I don't have a vanilla Nether portal in my base anymore).
B4: DE energy storage multiblock, with an Ender IO capacitor bank when I need to charge stuff, and tesseracts to send the power about.
B5: Assembly table, crystal growth accelerators, inscribers.
(I'm assuming I didn't miss anything)
If I add a B6 it will be at bedrock level and be used for MFR laser drills.
Maybe one of these days I should just straight up build a second main base somewhere, plan it out in a nice and organized fashion, stick the behind the scenes stuff (such as ore processing) somewhere remote, and move all my shit over. So basically the "house" would contain all the stuff I would actually interact with, and a remote location would keep all the fully automated stuff, with me only accessing it for maintenance purposes, such as if something goes wrong or if I want to expand the setup.