The North Carolina Biotechnology Center offers 3 flash grant cycles each year for up to $30,000 per funded proposal. 2 of the 3 cycles are thematic with highly specific research goals, and one of these is an open call for anything in the life sciences that could be translational.
They just announced that this cycle will be an open cycle (see RFA in link). The deadline is March 25th for a 3 page proposal.
https://www.ncbiotech.org/funding/grants/flash-grant