I've been very happy with my $60 trunk on my 2014. I added a zippered pouch to the back to keep gloves in. Gloves helped add padding. Works great as a backrest too. See pic below. It's an EMGO TRUNK (search google).
On my 09 I had a black headrest off of a junk car. I used a 2x4 and cut and shaped it to fit where the tools go. Put a bolt through the 2x4 with a nut under the fender. Drilled two holes in the wood so the headrest fit down in those holes. Painted wood black. Looked like it belonged on the bike. It was free.
“Take the risk of thinking for yourself , much more happiness , truth, beauty, and wisdom will come to you that way.” Hitchens