Homemade Halloween Costumes How-Tos

I was looking around for ideas on how to make a Mario Bro’s costume because my almost three year old asked to be one for Halloween.  I had already figured a blue overall and red long sleeve shirt would cut it.  I just need to make him an oversize red hat.  But I also found this other idea on Instructables.  Then I started poking around and found a few others that I thought would be neat you show you:

Lego Man Costume

Here is a simpler one Lego Halloween costume

There are tons more available and some are amazing like this Transformers costume.