As a raider I've never been low on emblems of any kind, other than in the beginning of a new raid tier where you buy your Txx gear.
When I have all the gear I want, I use my emblems on gems and the current crafting materials needed for gear (runed orbs, crusader orbs, primordial saronite) and sell them.
For over 1 year now on alts I've been:
1. Transmuting gems.
(I'm getting gems and crystalized stuff from mining/prospecting ores and when I'm low on gems, I buy them off AH. Autums's Glow, Bold scarlet ruby, Sky sapphire etc sell for ~5-20 g each. Once transmuted and cut, I make ~100 g profit each gem)
2. Got an enchanter/jc alt which I use to cut my gems + I'm self sufficient in enchanting too. The mats are from various 5m instances and raids and I sell some mats whenever I feel I got more than enough.
3. Do fishing daily + cooking daily on 2 chars:
- The waterlogged recipe sells for ~3-400 g on AH on my server.
- 1-2 times pr week I get the porcelain bell (100g vendor).
- I get 2-4 Deviate fish which cooks into Savory Deviate Delight and then sell on AH whenever I got 20 for ~40 g.
- Often I get 2-5 pygmy oil every day which is used for haste potions. Those I use myself in raids = no money used from my own pocket. Sometimes though I got more than enough and sell them on AH - 5 haste potions sells for ~30 g.
- Quite often I get the vendor trash dolls/pics that sells for 11, 16 and 25 g.
- I get spices in the cooking daily bag + I buy spices from the cooking bagdes and sell them on AH for ~100g for 100 spices.
4. Do JC daily.
5. Do all the WG quests on 2 chars every reset: thats alot of quest gold + I buy gems from honor.
My routine is this:
1. I log to my mage and do JC daily.
2. I log to my hunter and transmute gem, do daily fishing and cooking daily.
3. I log to my main and do daily fishing and cooking daily + random hc for frosts.
Everything is sent to my bank char and sold from him.
I'm totally self sufficient in anyway; I can mine, herb, pot/elixir master, enchanter, engineering and Blacksmithing.
Only thing I have to buy are leg enchants and glyphs. Glyphs are extremely cheap and seldom changed and leg enchants are not expensive either.
On a weekly basis I earn ~3-4500 g from steady flow of smaller/medium gold "payments" for like no effort and I have very little expenses overall, I use max 3 hours pr. week on this.
I haven't done a single grind daily since I got exhalted with all my home cities at Argent Tournament.
Its going to be a "pain" when Cataclysm hits since the first couple of months I won't be self sufficient, but eventually I will be again once my alts are leveled to 85