If you do want to send fruit, I'd suggest using a fruit company (Harvey's Groves, Hale, whatever) as they know how to prevent freezing (and deal with the 'produce police') en route. A bit pricey, but healthy goods.
I don't think silica gel will help. Mixing moist cookies with crisp ones in storage tends to average out the moisture of all to one unappealing result.
So does mine! I have little blue lids from Petco (with their logo) that fit perfectly. Broccoli bands, when wrapped around stubborn jar lids, give great traction.
As Lisa explained, glass is great for baking pies. Glass and ceramic are especially attractive when the item is to be served directly. The glass corners may be more rounded than *some* metal pans, but I am not that concerned about smaller corner pieces - it's an excuse to have another piece as well
I remember some of the mainstream 'women's' magazines - perhaps Woman's Day or Family Circle - used to publish a monthly dinner menu plan...perhaps they still do. They often would re-purpose leftovers from roasted poultry, hams, etc. later in the week.
I generally restrain myself from buying any cookbook costing over $15 or so sight unseen; bookstore browsing and borrowing from the library has saved me untold thousands. I cannot bear to throw away books, either, so I try to find library book sales or other charity sales to unload the very occasional 'dud'.
For those of us who are hopelessly in love with the printed page, bookcloseouts.com is currently offering an additional 35% off their cooking titles. Uh oh.
You might need a freezer - not a warehouse - as the whole grain products do not have a very long shelf life at room temperature. And then there is the need to defend against insect invasions.
There are mixes - and then there are mixes. The various King Arthur Flour mixes I've tried have had results equal to very good (though not stupendous) from scratch recipes. And their ingredient lists do not resemble a chemical warehouse.