The shelf
On this page9
What is here
704 rows: 298 containers and 406 closures. 117 PET, 106 glass, 62 HDPE and 13 PP, from 5 to 500 mL with a median of 118.
Glass is unusually well represented
106 of 298. For a display-oriented craft that matters: glass does not scratch, does not craze and does not yellow, and a jar on a shelf for twenty years will look the same at the end.
PET single wall jars lead
101 of them. Wide mouth, light, unbreakable and clear, which for a working collection handled by children and carried to shows is often the better object.
By form
101 PET single wall jars, 63 glass Boston rounds, 21 glass straight sided jars, 15 PE cylinder rounds, 12 HDPE packers and 8 PE Boston rounds.
The necks are wide
89-400 at 101, 70-400 at 99 and 58-400 at 65. A wide mouth is what lets a solid object in and out without forcing it, which is the whole requirement for a shell or a shard.
And the sizes suit the objects
5 to 500 mL. The small end is a sand sample or a shark tooth; the large end is a shell or a handful of sea glass. A jar bigger than that becomes a box of loose objects knocking together.
Closures are simple here
345 continuous thread and 27 dome lids. There is nothing to dispense, so the closure job is a seal and nothing else.
How to shop it
Decide whether the find needs a sealed atmosphere or just a dust cover, then clear or opaque, then size. Three questions and the list is short enough to read.