Uses for Mob Drops?

[Golrith]

I'm planning on building a mob farm, mainly to provide a source of bone and arrows for SteveCarts farming and defensive carts.

But, what could I do with all the gunpowder, string, spider eyes, rotten flesh, etc. These are all items in the past that I've never had any need for. I would like to put them to use under FTB. Don't care if a complex system needs to be designed, and if the return from these systems is minimal, as these materials are renewable, eventually over time I'll a return on my "money".

TIA.

 

[DVeagle74]

String is useful for wool and some recipes, especially the windmill when RP updates. You could use spider eyes for potions, or eat them along with the flesh, but I tend to recycle them into scrap and use that for a mass fab. and gunpowder you can use for TNT and nukes...

Don't let anybody tell you that you can't use a nuke against a lich in the Twilight Forest...

 

[MrZwij]

You can stick the flesh and spider eyes into a canning machine for safe consumption. If you leave water out of your trap you can get lots of ender pearls too, which are pretty useful.

 

[Mero]

Gunpowder for splash potions.

 

[RadioactiveSand]

Spider eyes can also be macerated into Grin Powder for WeedEx if you're interested in IC2's agriculture stuff and gunpowder is used in some of the Factorization power stuff.

 

[Golrith]

I was thinking about making a drop tower, and at the bottom either have some portal turrets or a stevecarts defender dealing with any survivors of the fall. I've never looked at turtles, although a lot of people rave about them. I guess it's because of the programming language, and I have enough to do with programming in my day to day job, I don't want more But, I would love to make an army of droids Any straightforward guides out there?

What other mob farms are there? I've seen Direwolfs Drop Tower, and a Water Drowning trap.

I've tried IC2 agriculture. Not too keen on it. Haven't yet managed to make a new plant species, and hate how fragile the crops are. One heavy breath, and you've lost your crop.
I've also disabled Factorization, not keen on it's silver worldgen (mod conflict, Silver should be rare), power generation and magical routers.