How do I find the items I purchased

[Felix]

I bought 3 shovels and 2 walkie talkies

[Ghosty]

You'll hear a jingle and a dropbox comes and drops it off to you at your location, listen the jingle to find your way to your items! (it takes approx. 10-20 seconds until you hear/see the dropbox after you order your items) Hope this helps!:)

[Lupa]

Be careful when going to pick up the items from the dropbox ship. It can and will kill you. I know from experience.
They don't drop in random places btw so it's good to take note where they drop on maps.