Inexpensive old vintage iron. They have very minimal lips and can be hard to hold with a pinch grip. The heavier plates make for good grip training when held vertically. If you bore them to 2" the 50lb. plates are excellent for deficit deadlift and barbell rows.

Mass produced pig iron plates, made in both 2" and 1" bore sizes. Usually very inexpensive, can often be found on FMP for less than $1/lb. They hold no real collector value but they are still worth having in the gym just out of respect and admiration for their namesake. Jack Lalanne was an absolute beast and legend, a true pillar of the strength and fitness community -- he focused on longevity and functional fitness long before it was ever cool. Look up his swims in the SF Bay, towing rowboats behind him well into his 7th and 8th decades! Legend!

Older standard plates but these were made in the York Barbell era, not by the original Milo company, after Milo was sold to York. They are readily available on the secondary market, often found in bundles of older 1" plates. If you shop for them on eBay you'll get ripped off but if you search around on FMP you'll find them for a song.

Tiny little vintage bumper plates with 1" standard bore. I've no idea why rubber bumpers would be necessary on such small plates, but they are unique in that respect. Some mild collector value but they are pretty readily available and easy to find. I put them on the minions' curl bar and let them do all manner of upper body movements with them.

Vintage standard plates that have some mild collector value if you're into 1" plates, but still commonly available for $1/lb or even less. Not all that accurate, as is normal for the older standard plates, but they're solid iron and they do the job. Commonly available in bulk lots of older plates... you're likely to see them at garage sales and on FMP.

Cheap iron weights that are easy to pick up on FMP, sometimes for as little as 25cents/lb.; these are common finds in old basement and garage gyms, useful for just getting some extra weight but very inaccurate and not worth spending any money on. I use several of these as counterweights and fillers to add weight to sandbags.

very reasonably priced and pretty damn accurate for bumper plates. I have two pair of 45s and they have seen heavy use in the past five years. The rubber has held up very well and there's no looseness in the hubs at all. I have way more than gotten my moneys worth out of them. Buy these with confidence.

This is so efficient and useful that you ought to get two. Put one on either side of your dead lifting space. They only come in black but that's easy to fix with a little rattle can therapy. The tiny wheels on the end with the barbell holders are basically useless and will only make this thing mobile if you take all the plates out of it.