This is what I usually do. I have a "kit" my friend say to make fun of me. Its basically 2 freezer bags.

Inside the first one is My pokemon tin for ground up weed. 2 packs of papers. A plastic container for stems and seeds. And a wooden smell proof box for roaches. Then a seperate bag for my buds. Cig's then lighter(s)

Then I take out what I need. Roll everything on my desk, leave the joint out and 1 lighter. Put everything back in the bag.

I go outisde and smoke. comeback and my shit is all neat and together. Put my roach in its case, lighter back and cigs if I smoked them to.

Then I put that into the second ziploc bag. Then fill around the main bag with dryer sheets. Seal the first bag and tuck it inside, then seal the second bag and hide it outside in gap where the two roofs meet. It's within reaching distance so I can grab it from my window.

Then I sit back and enjoy the high, knowing the only way to get caught. is to be caught high.

(also if you're really worried. if you're smoking alone take you're shirt off or replace. Or just spray with shit.)