I can get hundreds of pounds rolls of electric board paper, free. Can even cut them to width on slitting machines. Unfortunately, have no printing capability, but,
I have used the brown construction paper sold in rolls at Home Depot and lowes for years. it last a long time. Draw circles on it with sharpie and bottle cap.
I have lots of scrap copier paper from mistakes and stuff I don't need so I turn it over and print targets on it. There are tons of targets available for free to download and copy for just about nothing....
Even for load development. 60 cent can of white spray paint. piece of 1" square tubing. spray around it......hang target.....shoot..........listen to the dulcet tones of fun.
If I want to remember the groups I use a spiral note book for that caliber from my bench. I record the group which is easy to see by the exact center of lead splash.
Been doing this for 15 years now........same set of 2/3 size ipsc human targets ar 500......
If you want quick targets, get a few cardboard boxes. The ones for oranges and apples are just about right. Use a sharpie or something similar to mark several target centers on the side of the box. Take it to the shooting area and set it on the ground and you're ready to shoot. No stand, nothing else needed. When you shoot up the side, turn it the other way and shoot the end.
I usually use Xmas wrapping paper but as of late I recycled the large office wall calendars. Businesses here print each year and the office was notorious about keeping prior years. They are good for the range during open range day to help people get sighted in. For practice/ plinking I have ar500 in 8 targets set out at my small property- just barely gets to six hundred.
I started in benchrest, so I like to be able to measure my groups. I buy cheap 110 lb card stock (I think that's what it is) off amazon and put 5 1" black/orange dots on per page. Much easier to see/measure groups than with copier paper/etc. I figure a few bucks spent on that is a drop in the bucket in this hobby.
Roll of white freezer paper from the dollar store, stick on target dots. Have seen guys use those ink markers old biddies use, when they play bingo, for the dots.