Or playing games with their phones or reading a book. I always feel as if I am 'intruding' so I will by-pass those booths/tables. But I'm also a little leery of folks who are just sitting there doing nothing. No "hello/welcome", no "How are you?/Are you looking for anything in particular or just browsing?"...again, it's like I'm intruding on them. I'm the same whether it's a craft fair, farmer's market, flea market or garage sale.
However, when I see someone doing something 'crafty'...it makes me want to take a closer look, even if the craft has nothing to do with what they are selling. I can't exactly make soap, so I take my knitting with me...either a wash cloth in a pastel soft cotton on circular needles, or a two color scrubby on a circular loom. Keeps me busy without requiring my full attention, can be easily set down and works as an additional conversation starter.
I had a sign on my Lotion Bar samples that said "Please pick me up." This was of course, pre-Covid. This time I will be using deodorant containers for my samples and a package of unscented wipes to clean off the tops.