Weaver is going to be the hardest one I can think of without leves.

Diremite Webs, farm them over and over and over again.

If you get 2-3 stacks of webs you might be able to grind your way through to when you use Flax. Flax you can gather with Botany.

But, it will be rought. Some leves cost 2K in materials to do, but you get over 50K xp.