for driftwood, malasian (the common one

) is best and cheapest. you can get a fairly big piece for under $10 bucks at petsmart/petco
Take it home and soak it in a tub of water to wash it off. Dump out the water and refill. Do this for about a day. Then add it to the tank, voila! It may "color" your water a bit for the first few months but this is not at all harmful and clears up with water changes.
After that, you are done. You will not need to get a new piece for years if ever

. If you see a bit of algae grow on it over time, leave it - the bristlenose will enjoy it.
To help keep your stock as is, I recommend at least one piece of driftwood (keeps the bristlenose happy and if you lean them rather than lay them flat they make great hiding areas that the fish will enjoy swimming in and out of.)
Also, live plants. These do wonders for water quality and if you are like me and have a brown thumb, then here are some non maintenance plants - -
#1 - water wisteria. Grows like crazy and you can either stick the roots in your substrate or just leave it floating (like I do)
#2 - moss balls. Don't grow fast at all, but look interesting.
#3 java moss - you can just let it float around or attach it to a part of the driftwood with either cotton thread or fishing line and it will eventually root itself to the wood and give you a tree - like appearance. Just trim with scissors to keep it healthy
these plants need no fertilzers, just your standard aquarium lighting and no C02 requirements - my kind of plants!! ( I have killed most every other kind lol)
Currently, I only use moss balls and water wisteria (it covers the whole top of my 72 gal, 29 gal, all of my ten gals, my future mother in laws 20 gal, my sis's 5 gal betta tank and my future sis in laws 2.5 gal betta tank) and all that grew from ONE clipping that I bought at the end of last summer (about 9 months ago)
When there is more wisteria than you like, just rip a hunk off and throw it away or give it away/ sell it.