cottonballs and Vaseline make a good fire starter. use small flakes of wood you scrape. birch bark works good. small split wood to large. only use rounds after you have a good bed of red coals.

I've used some of the paper packaging that come in amazon packages with smaller logs. More small logs vs a few larger ones seem to work much better and heat quicker for me.

I found some natural fire starter cakes online and I place one of those right in the center of some finely split white oak kindling. I use a small propane torch to get a good hot flame going and the small (1/2 inch diamete) kindling takes about 3-5 minutes to develop the flame and coals to begin increasing the log size and the heat increases to 200 in the tent within 15-20 minutes. Here is a link for the for the fire starters: https://a.co/d/fnznVTG

To me it is disposable diaper quandary. Washing cloth diapers with mild hand soap may have merit, disposables make life possible. I usually use chunks of duraflame brand logs to start my sauna. I try to use the best split hardwood I can find. I would burn old pallets if it came down to it.

I use an the egg carton with a tightly balled up piece of newspaper and one big log on the side with 2 smaller on top of the carton and newspaper.

I have a woodstove so I thought I could just do what I do for that but it is slightly different. I use the tumbleweed firestarters. I take 1 large piece of wood and a couple split pieces of kindling. I stack them in a way that there is an air gap at the bottom and put the firestarter there. I light it and wait one minute. I make sure the vents are open and crack the ash tray about an inch. Then I shut the door and set a 15 min timer. After 15 minutes I add one more big log then set a 15 min timer. Once that is up I have a raging fire. I usually add a big log as soon as I get in too. I use oak and beech that is about 15% moisture content.