Need better setup to start seeds

I have a super low tech setup for starting my seeds. I was away over the weekend and didn't set up my lamp. The brussel sprouts, broccoli and kale germinated but without lights, got really leggy.  I really need to make a better setup for starting the seeds

My simple setup

Leggy looking seedlings

Not only that, I have my starter in an empty salad container and left the lid on. It probably got too humid in there and I found some white fuzzy things on them. I think this is fungus. I read a little about damping off in seedlings but I don't think what I have at the moment is hurting my plants. I might start another tray of the same thing just to be on the safe side. I also left the top off and got some peroxide to spray to kill whatever it is that is growing.

White fuzzies on my toilet paper rolls

Here is a quick picture of how I make bottoms on my paper towel seed starting pot. I usually first cut the toilet roll in half so I can make 2 starter pots per roll. In this picture I did not cut it into two because I wanted a long one.

First press the toilet paper flat, then fold again so that the crease made in the first step touch (basically making the toilet paper into a box). Make a little cut on 4 corners and fold over like a bottom of a box.