i store my buds (qp+) in a jar, and ive noticed a massive build up of trichomes and keif in the jar. what would be the most efficient way of harvesting said powders from my shake (7g's) AND harvesting the powders from the jar?

extraction via butane or acetone?

rubbing alcohol

I would use a screen to extract the kief from the shake, then a BHO extraction. Scrape the kief from all around the inside of the jar with a razor blade and tap it all out. Then mix the kief with the BHO and really knead that like a little ball of bluetack for as long as you can for some lurvelllllly hash!

scrape out a clogged billpiece and then dry the tar from inside and press it into a hard cube. Then start wiping up the kief and it will all stick to the tar. Squish it together until it is uniform. If you do that once and collect all the kief you have it will be probably from a QP 97% kief and will stick together nice. Thats what I would do.

This sounds like the best plan to me.

If you're lazy, just swirl with iso alcohol and strain out vegetative matter. Then evap or boil off the iso.

I actually just moments ago did dekeif a jar. I just scraped it with an unsuitable blade and it took a while, but I would suggest using just a razor blade or two, and gather it into powderish piles of hash that you can squish together when your done, smoke it right there. No Alcohol, extractions or anything, and if you're good you dont leave but a few percent of THC left.