Tubular bind off
A tubular bind-off that's a perfect match for a tubular cast on. The only catch is that the only way to create that seamless join between the stitches is to sew it. Sewn bind-offs, especially along long stretches aren't my favourite but this one is completely worth it. Just make sure to cut the tail long enough. This technique involves grafting so if you aren't familiar with that you might want to look that up.
There are two ways to do this, the method shown here is by far the simpler but skipping the second needle and grafting the stitches on one needle, like this, is faster.
Shown as a bind off for k1, p1 ribbing but can be used for any stitch pattern that you'd use a tubular cast on for.
You will need
Blunt darning needle
A spare needle in the same size or a slightly smaller size than the working needle
2 x 2 ribbing
For 2x2 rib the stitches can be rearranged into 1x1 rib before working the set up rows. If you've already done the tubular cast on for 2x2 rib the process of rearranging the stitches is essentially the same. *K1, slip the next st off the needle, p into the next stitch making sure that the loose stitch is a the front, put the loose stitch back on the needle and k it, p 1, rep from * to end.