This is a repost from a recipe I posted on r/archery:
Been experimenting with diy targets for a while. This is one made out of a 50x50 cardboard box filled with stacked cardboard.
I alternated cardboard scraps with thightly fitted peaces to press them down.
I finished them up with a U formed piece that sticks tight and prevents the pieces beneath to come out on top.
The benefits of this is that I can just swap out the box (have several) reuse most of the filling. Also it is cardboard only, no glue or else, which means it is still fully recyclable.
After some arrows thrown at, it I'll probably put some flat pieces to the back.
Apart from that it works great so far
Mmm, at 35lbs I'm putting holes in the plywood behind my 8cm foam now ... I should probably chuck some cardboard back there just to make it last a bit longer
I've also read scrap carpet cut into squares make an excellent backdrop for targets.
I now have a carpet backdrop in the form of an old rug, to catch any strays (I had one arrow that somehow managed to ricochet beyond the property line, and I don't want to loose arrows back there because it's full of spiky bushes) and have added cardboard between the foam and plywood which is working nicely :-)