Check out this one for housing all your pens and pencils.
Worried about sharp edges?
If you find any sharp edges after cutting, they can be sanded down, covered with electrical tape or use a hot glue gun and ribbon to decorate and cover the edges.
A very quick sand with fine sandpaper has always done the trick for me though
Are you finding the OCD in you wants the lids to match the pencils?
A bit of acrylic paint would soon sort that.
You could then make tidying up into a colour sort activity for EYFS then too!
What are your top tips for keeping an organised classroom?