Yeah, I had the same experience with 1 DM when I tried to use ToB - he decided it was too "wiaboo (Sp?) anime-esque" for his campaign. Pfft to him.
I'll explain the whole kobold thing as concisely as I can, but keep in mind that I find most of it after step 3 to be pretty blatant rules abuse. And it's also off-track for this thread, so I apologize.
1. Be a kobold. For added power you're a Desert Kobold from UA, which changes your -2 Con for -2 Wis. Let's assume you start at ECL 6 for this to work at maximum ridiculousness.
2. As your 1st level feat, take Dragonwrought Kobold from Races of the Dragon. It's a very strong feat that makes you a true dragon with the dragon type. That's where all the trouble starts.
3. Set your starting age to venerable. As a true dragon, you take no ill effects from aging, so you gain +3 Wis/Cha/Int for free.
4. Take the +1 ECL adjusted White Dragonspawn template from the DLCS, blatantly ignoring that it was updated to +3 LA in Dragons of Krynn, and that as a creature of the dragon type you're not even eligible to take the template. Also ignore the fluff about you being a soulless minion of a chaotic evil dragon overlord who can see through your eyes and can control your every move at will. This gives a bunch of nice stat boosts and natural armor, and boosts your sorcerer level by 1.
5. Buy back that level at 3rd level using LA buyback from UA. Now you're a sorcerer 3 with +1 to effective level for all spell purposes. You can cast 2nd level spells like Glitterdust, for example.
6. At 1st level, undergo the draconic rite of passage. This is mostly worthless, but sets you up for #7.
7. At 3rd level, take the Greater Reservoir of Strength feat from the obscure Races of the Dragon web enhancement. This too is mostly worthless, but sets you up for #8
8. At 6th level, undergo the greater draconic rite of passage from that same web enhancement. This gives you +1 sorcerer level constantly. Now along with that white dragonspawn, you're ECL 6, casting as ECL 8.
9. Change settings abruptly, and turn to the obscure Dragons of Eberron. Take the Loredrake alternative feature from there - it's meant for true dragons with innate sorcerer and cleric casting from racial HD, but you're a dragonwrought sorcerer, so it's totally the same, right? You lessen your nonexistent dragon HD from a d12 to a d8 and sacrifice your nonexistent cleric casting, and in return for this nonexistent drawback you gain +2 to your sorcerer level. Now, as ECL 6, you're casting as an ECL 10 sorcerer. That's not caster level 10 - that is literally sorcerer level 10, meaning you can cast Contact Other Plane, Feeblemind, etc.
10. Change to the Draconomicon, and note the one sentence at the intro to the feats section, that states that true dragons of old age or older can take epic feats. You're a venerable dragonwrought kobold, so that's totally the same, right? Now as your 6th level feat take an epic feat - how about Epic Toughness, for +30 hit points?
11. Step back and take a deep breath: you are now a Venerable Dragonwrought White Dragonspawn Loredrake Desert Kobold with Greater Draconic Rite of Passage and Epic Toughness.