Although I mainly attend folk concerts, my favorite concert is probably Paul McCartney, at Detroit's Little Caesars Arena, in October 2017. I've loved the Beatles since they hit America in 1964 (I was in 6th grade) but had never seen any of them in person. As soon as Paul opened the show with "A Hard Day's Night," it felt like I was finally at a Beatles concert -- he played for almost 3 hours, and Beatles songs made up 2/3 of the setlist -- and it was truly thrilling.
I have dozens of favorites, but two special ones are Peter Ostroushko's "Heart of the Heartland" (Red House), with gorgeous mandolin and fiddle tunes composed and played by my all-time favorite musician, and "For Pence and Spicy Ale" (Topic) by the great English a cappella group the Watersons, for their powerful vocal harmonies on traditional British folksongs.
Favorite Elderly Instrument:
A Martin 0-15 mahogany guitar (1961) and a black Gibson A-style mandolin (1929), both purchased at Elderly Instruments, and both good choices for someone with small hands!