"Old school" supplies you still use.

I just pulled out a bunch of my stash to make three memory boards for my dad's memorial service. I used Basic Gray distressed green papers from several collections for the backgrounds, some Cloud 9 Family Quote stickers, a 49 & Market Travel Collection from several years ago, some Jolees Flag stickers, Simple stories alpha stickers which had to be at least 10 years old. My non-scrapbooker sister was amazed at how many items I had for the different themes we needed.

I still like and use buttons.
I also still like to add tags with ribbon or cord/fiber through the hole and primarily use them for journaling.
I occasionally add flowers to pages (not diecut flowers but the dimensional ones like Prima and 49 and Market), but was never into floral overload.
I have supplies from 2 decades of trends - from eyelets and brads to washi and wood veneer.
Many of those embellishment types I've used on a few layouts and never warmed up to but haven't parted with them yet either.
Really nothing is off the table when I create a layout except supplies that have gone bad, like rusted flair and yellowed acrylic brads.

I still like to use my QuicKutz 2x2 and Revolution 4x4 items on cards, tags, and layouts. I don't use them as often, but still do every so often. 

I like to go through my stash every 6 months and purge older items I haven't reached for int he last 6 months. The likelihood that I would need it or want to use it is very, very slim. So I just donate it to DD or Dh's school or offer it up on the free items group I belong to in my community. 

I do have 2 border punches from back in their heyday and keep those as they are used a few times a year. Haven't felt the need to get rid of them yet.