Over three springs, I have gotten from
Mardens (a Maine chain of surplus/salvage stores) a 100 count bag of 3", 3.5" and most recently 4" golf tees for about a buck each time. I have a few pipes with deeper chambers, and the extra length of the 4" leaves me something sticking out of the bowl to hold on to when using them.
I am using the shorter ones to outfit pipe-starter-kits for gifting to people who are interested in taking up the pipe. Given how many there are left in the two bags of shorter ones, that should last me this, and the next two lifetimes. Probably at the very least!
I do have a number of metal tampers, including pipe nails, plated horseshoe nails, Czech tools, and one 1920s era pre-Czech-tool design that was included with an order for clay pipes that I got from Germany last year. The problem with these being, they manage to dig their own escape routes out of one's pocket all too quickly. I made the mistake of carrying a Czech tool in my pants pocket one summer only to find that the pivot had become a ball of rust from all the summer sweating.
I've promised myself that if I make myself any pipe racks, they're likely to get a hole made specifically for standing a tamper up in.