If it's gear you will use until TBC I would definitely put some 'medium' enchants on it as the mats for these won't cost much and you can get some very useful boosts. Stuff like the following will only cost a few gold each for the mats:
+7 stam on boots
+7 stam or str on bracers
+7 stam on shield
+4 dmg on 1h or +7 dmg on 2h
+3 all stats on chest
+70 armour or +3 all resists on cloak
Happy to do any of these for you with my Hunter (Friendlyfire) if you grab the mats from AH (mats for the above should be cheap).
For your AV epic mace I would put something quite nice on it, like Fiery Weapon, +15 Agility or +9 dmg (I can do the first two, not the +9). Mats for these aren't too expensive and it's worth it for that weapon as you won't replace it immediately with TBC. I wouldn't however put Crusader on it as it's too expensive (my Enchanter can't do that one anyway, can't afford the recipe, Sax has it though). Avoid Icy Chill, it's totally hopeless.
Message me when I'm on and I can tell you what mats you need, or look on Thott:
http://www.thottbot.com/?t=Enchanting