Complete feature list:
Gravity Bomb: If there is air below it, it falls until it hits a block, and then explodes. Craft 3 of them with 3 TNT along the top, one blaze powder in the middle and 3 iron ingots on next to the blaze powder.
Excavator Bomb: Functions much like a gravity bomb, except after exploding continues falling and exploding for a set lifespan. To craft, line up 3 gravity bombs vertically, put iron on the middle sides, and put iron pickaxes on the bottom sides.
Place a tool (or other non-stacking item) into the slot marked with a pickaxe outline. To put something in, put it in the slot with the down arrow and the tool below it. To take it out, put the tool in the slot below the up arrow. Note: Tools with gunpowder explode when used, and tools with a fermented spider eye poison the player who uses them. Craft it by placing a lens, workbench, and chest along the top, 3 iron blocks along the middle and planks in the bottom corners.
Fork bomb: Almost exactly like a time bomb with one crucial difference: When it is right- or left-clicked (but not when it is sneak-clicked), it places fork bombs (with the same fuse as itself) in any available spaces adjacent to it. Note that it looks exactly like a time bomb: this is intentional. To make it, surround one time bomb with end stone.
Temporal Dislocator: This is for anyone who has ever been stuck waiting to craft something, having all the parts needed except for one little thing smelting in the furnace. When you sneak and right click a block, it causes the future version of the block to be pulled back in time to the present. NOTE: I haven't tested it on all mod blocks. Use at your own risk. If you wonder if something is safe, try it in a test world first. In my test it worked just fine on HV solar panels as found in Tekkit Lite, dumping hundreds of thousands of EU into an MFSU instantly. To craft, surround an iron ingot with clocks.
Defuser: Instantly removes blocks listed in the mod's config. (Put in all the explosives in your pack or it won't work on the ones you miss. It only works on blocks so far.) It is the only way to neutralize fork bombs. In doing so you need to sneak, upon pain of having 6 times the problem on your hands.
Nothing, shears, lens, nothing, stick, shears, stick, nothing, nothing.
Build tool: This is a time- and space-saving utility item. It is effective against blocks as a diamond pickaxe. Load things into it with the inserter, and when you right-click with this tool it has the same effect as right-clicking with the thing you put in. (Warranty void if used to launch projectiles.) It also automatically refills itself from your inventory. It is not exempt from exploding or poisoning its user as any other tool does, depending on what you put in it with the inserter. It is made with a diamond pick in the bottom left, piston in the middle and chest in the top right.
Invenswappers: These two closely related blocks move your inventory quickly without the hassle of opening GUIs and shift-clicking or related shortcuts. When placing them, make sure that you can walk on top of them and that directly above is air. To use them, walk on top of them and sneak for a moment. On the blocks, the red arrow in the arrow pair is the one that marks the flow of items. They also put a big arrow above themselves when placed, and this shows which way they move items. Right click them to see what is inside them. They are made like so: ICI LPL LHL where I is an iron pressure plate, C is a chest or hopper, L is a lapis block, and H is a hopper or chest. You can also convert between in and out invenswappers by putting them in any crafting table.
Fire extinguisher: Extinguishes blazes of all types, from the hostile mob (2 hits to kill) to fireplace building mistakes, prize sheep burning and even deforestator or miner's lighter fire if you're really fast about it. Made with one iron ingot on the top center, two water buckets below, and rose red in the four slots beside the water.
Dynamic wool: Looks like wool. Changes colour in response to analog redstone signal. Black is full signal, white is power off.
In 1.7, Minecraft introduced portals of any rectangular shape no smaller than 3x2. But why stop there? This allows any size and shape of portal to be created.
I regularly check the Minecraft Forum post at http://www.minecraftforum.net/topic/1797245-16xforge-gizmos-v12-kaboom/
I often check the Technic Forums post at http://forums.technicpack.net/threads/gizmos-v1-0-smp-friendly-again.40648/