Hook handles are the two grab handles in the that are above the doors in the back seat area. They have hooks on them where you can hang a jacket, dry cleaning or a suit when travelling. These were offered on early 2002-03 models, discontinued, then offered again for limited editions. Since my '06 LE has 'em I won't be needing the set I bought for the '03 but never installed. They were purchased from GM Parts direct. The rear cargo mat is OEM and from the dealer when it was new.
The cargo drawer was purchased through H2 Source....
I included example photos but they're all pulled from the web, except the top one (my '03 with lights installed). I may not get back to storage until this weekend for photos of the actual parts.
Hose Kit....It came in my '03 and was used very little (air up bicycle tires). The kit included the black pouch, hose with gauge, and should have the three original attachments that were never used. I'm not sure what the going rate is, but I was thinking $50 (price includes insured and priority USPS shipped).