My range is in a few hundred acres of forest across the highway from me. (Closest real range is about 20 miles; mine is a lot closer and nicer; I've always got the place to myself. )
I've been using DIY targets made from pieces of white corrugated cardboard from cutting up boxes, on which I use a dark marker to draw small concentric target's about the size of a squirrels head. It's cheap, which is good, but I'm also finding I really like the way the bullets leave more distinct holes in the cardboard than in paper I've used.
I simply find a downed tree -- usually balsam fir since there are a lot of them downed (they seem to just snap in wind storms) -- break off a small limb to about 2" long, sharpen the end of it, cut a small hole in the target and push it on. Then step off the number of paces I want to shoot.
When I'm energetic I'll put the rack of various sized steel gongs down at the 100 yd line. After I get bored with constantly hitting the 4" one (smallest I have) I start shooting at the remnants of clay pigeons left on the back berm by other shooters.
The range I go to has a lot of red clay pigeons in the sand / dirt bank at the 100 yard line. There are hundreds of these from whole to small pieces. Fun to bust them up and they are free. Plus with a bad knee and 72 year old legs I don't have to walk down there to set up targets.
For my .22 rifles, I typically use two kinds of targets. One is basically a standard size sheet of paper on which I print targets I've downloaded from the web. Most of those have multiple circles/bullseyes on one page, anywhere from 5 to 20 per page. The second type is a larger commercial target designed for centerfire rifles, these usually have a preprinted grid of 1" squares as a background and 5 bullseyes (sometimes diamonds) with a bigger one as the center target. I use these at 50 yards, but add multiple 1" stick on dots to it so I end up with 15-20 total targets on it. The stick on dots can be purchased orange circles or squares designed for that, or simply colored marking dots from an office supply store. Those normally come in multiple colors, although some colors don't show up all that well at 50 yards. Red works best, yellow the worst.
I also keep a magic marker in my range bag so I can note the date, distance, rifle, and ammo on the target. And a small stapler for said targets too.
Sears (J.C. Higgins) produced a line of about 10 paper targets during the 1950s or 1960s that depicted crows, rabbits, squirrels, turkeys, raccoons, etc. I print these vintage targets out for shooting with my 22. Here is a link to three of the targets, but there are more out there that you can download and print. I also like to shoot steel targets. Spinners are really fun with a 22.
You can always make your own shoot and see targets. I buy some brightly colored poster board and cover it with clear plastic packing tape. Then spray it with flat black paint. I stick some of those dots from the office supply store on top of the paint to act as aiming points. When a bullet hits it, the paint around the bullet hole flakes off exposing the brightly colored poster board underneath which is much easier to see from a distance.