1965 Chevrolet C10 lwb/long bed step side

my C10 still has the original style fuse panel with the glass bulb fuses.

The fuse on the heater blower circuit, sometimes it wiggles just enough after I hit a bump or something and it breaks contact, the heater blower turns off.

I'm sure I'm not the only one to have this issue or something similar.

I am curious if there are any safe fixes some of you have come up with?

Thanks.

-Woog