empty Tupperware (or easily-emptied Slurpee cup)
exceptionally tall husband
Things That I Can Only Imagine Would Be Helpful etc etc:
pants which come all the way down to one's ankles
shoes which are NOT basically BOARDWALK RUBBER FLIP FLOPS. (I don't care how much I paid for these things, or how comfortable and supportive they are, or even how lucky I am that I have a job to which I can go 98% barefoot every day. They are FLIP FLOPS and one should THINK TWICE while approaching blackberry thickets.)
sufficient time for picking before the enthusiastic toddler needs the bandaids.