Welcome to the gang.
Being a Grandpa is great -- I have two sons, and the elder one has two sons, now aged 4-3/4 and 2-1/2. My wife and I take care of the little guy on Tuesdays and Thursdays.
They live near Legoland, which is convenient because they and their dad and their granddad are Legomaniacs. Here they are with the driveable(!) 1:1 scale Bugatti Chiron made almost entirely out of Lego Technics parts, except for the metal frame and some 3D-printed drivetrain components.
Henry has started bicycling, but Erik still rides in the Burley trailer behind my son's 1980 Peugeot PKN-10, which used to be mine, but is one size too tall and too long for me.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069