Bond Investing in Your 70s

We made it to our 70s, so congratulations to us. However, we still have much life left, so we need income.
Our top priority is protecting our capital at this age. However, we can use bond interest to invest in higher-yielding securities.
We should also attempt to build generational wealth by investing in Series "I" Bonds for the grandkids.
Finally, we need an active income component to our lives, or we will succumb to inflation. We can walk dogs, write a blog, or sell fruit from our garden.
If we can create money from thin air, we will always thrive in today's environment. We can also enjoy our side hustles. Good Luck!