For those adults reading thins, look around at the next meeting you attend, how many people come in without what they need, or a pen runs out, or they need more paper. A good facilitator has these items available for all so that the flow of the meeting is not disturbed and people can continue to work and contribute
Usually the first couple months the kids are pretty good at bringing their supplies. At the end of the school day I walk around the classroom and any pencils or pens that are on the floor, I collect and put them in a (SHOCK) cigar box. The kids know anything in the box can be used if they forget or have lost their pencils.
As you said there are some kids that have difficulty getting supplies. I have book covers available for any student who was not able to get them.
With all the dollar stores around our area, pencils/pens are not much of a problem. The same with the binders.