- something to add weight and sturdiness to the base of the box: I used an end piece off some hardwood flooring - another option would be to stick together a few pieces of heavy cardboard
Start by lining up your TP rolls inside the box to see how they'll fit. If you have a gap at the bottom, that's perfect: you can place your weighting wood/cardboard there. If you have gaps at the sides, you could adhere some cardboard to the insides of the box to fill the gaps (or get creative by adding in some other odds and ends).
Now, take one of your TP rolls. Put a piece along the length of the tube at the side (at 9:00), and another one along the bottom (at 6:00). (Sorry, the TP roll in the photo is flipped over so you can actually see the tape.) You'll affix the 9:00 sticky side to the side of the box, and you'll affix the 6:00 sticky side to the bottom of the box. Repeat this across the bottom of the box. You'll need to apply double sided tape to three sides of the last TP roll in the row.
And there you have it, folks: an uber cool organizer with lots of tubular compartments for all your crafty tools. If you're really ambitious, you can decorate the outside of the box. I covered mine with some old wrapping paper I had laying around.
And hey, if you're not arty or crafty - and don't get all keyed up by seeing beautifully organized markers - you can use this organization station to store other stuff around the house. You could use it to store wires and cables, your assortment of string and twine, pens . . . anything you like . . . except knives, maybe.