the way I usually print is on foil sticker paper, just send it thru an inkjet with glossy photo paper settings and it comes out *amazing*.

this is what I use specifically https://www.amazon.ca/dp/B097RJFBBT

and this is what it comes out like! https://i.imgur.com/qhKfXLq.mp4

i get or make my card images, then use https://www.imkyle4815.com/printTool to put them on a sheet, slightly oversized. if they're formatted with mpc bleed edges, you can use this instead https://github.com/reisir/proxy-stuff#printable-mpcfillcom

then i print with high quality inkjet settings on my printer, which for that card was a super cheap canon mx492, so you really don't need anything special. just crucial that you set it to high quality and glossy photo paper.

after that, i cut out the corners of the cards so i can see where to put it, then take it off the backing and stick a bulk common to it https://imgur.com/a/xmTo5Uf

you can do the same thing with opaque sticker paper for nonfoils. it's a lot easier than printing on cardstock because most printers can't handle printing on thick enough stock, and then you'd either end up with white backs, or have the hellish job of trying to align prints on the front and back of paper, which consumer printers are terrible at.

i also do some more exotic proxy stuff, mostly with transparent stickers, and blanked foils https://imgur.com/buzxi0n https://imgur.com/3yfbewY https://imgur.com/SiyN7F4