You may not find this terribly rewarding unless you're included here, so this is a good time for casual and random browsers to turn back before they get too caught up in the sweep and majesty of the proceedings and can't let go.
An extremely cute Bambino Gesù, in his Sunday-best dress (in the Theatine church of Sant'Andrea della Valle, Rome) [viewed in 2010]
Christus triumphans (by Juan de las Roelas, ca. 1616, in the Museo de Bellas Artes of Seville) [viewed in 2011]
-- Go in peace (by Zurbaràn, also in the Museo de Bellas Artes)
A cute little redhead (by Gerard David from Bruges, in the Palazzo Bianco in Genoa) 
The very image of his mom, and with his little coral rosary on for protection (by the mid-15th century artist known as the Maestro dagli occhì ammiccanti -- The Master of the Squinty Eyes -- in the Pinacoteca Nazionale in Ferrara) [viewed in 2013]
A pause in the parade of Baby Jesus pictures for a fast look at the world's ugliest Madonna -- a detail from the Croce Sagomata col Pellicano, la Madonna e i santi Giovanni e Cristina, ca. 1450, attributed to Giovanni Martorelli, in the Pinacoteca Nazionale in Bologna [viewed in 2014]
A desperate little Jesus, by Angelo Puccinelli, ca. 1390, in the National Museum of the Villa Guinigi, in Lucca
Another go at it by Puccinelli
A long-haired little tyke getting some help giving his blessing (in the Civic Museum in San Gimignano)
A very laid-back Baby Jesus, despite missing his shorts (Eusebio Ferrari, Madonna and baby with saints and two donors, 1519) in the Palazzo Madama, Torino [first seen 2014]
'Madonna with St Catherine of Alexandria and St Barbara', by the German Hans Sebald Beham (1517), in the Pinacoteca Malaspina, Pavia [viewed 2015].
In the Civic Museum in the Palazzo Farnese in Piacenza, this enigmatic Jesus with his mom was discovered during the building of the Palazzo Comunale in 1281.
Madonna and Child of the Improbably Long Necks (by the 13th century 'Sienese Master'), in Federico III da Montefeltro's Ducal Palace in Gubbio, a smaller version modeled on his Palace in Urbino.
Baby Jesus in pigtails. This, from the mid-14th century, has been attributed to one of the best known of the local artists, Mello da Gubbio; now in the Palazzo dei Consoli (Palace of the Consuls) in Gubbio. 
The Baby Jesus with the exploding head, by Vigoroso da Siena, ca. 1291, now in the Galleria Nazionale dell'Umbria, located in the Palazzo dei Priori in Perugia. 
A silly Baby Jesus; Gentile da Fabriano, Madonna in trono col Bambino e angeli (1405-1410), also in the National Gallery of Umbria in Perugia
This is an interesting if convention Adoration of the Shepherds, attributed to Denys Calvaert, ca. 1600, in the Sabauda Gallery, part of the Ducal Palace in Torino, and . . .
. . . the smile on the face of the Happy Jesus is priceless. 
A squat little Jesus: the "Aquila Polyptych", Giovanni Badile, 15th century, in the Castelvecchio in Verona (St Peter Martyr of Verona is the one with the cleaver in his head.) 
And this uncharming Madonna with her son and a sneering John the Baptist (by Somebody from the Veneto, 16th century), in the Papal Palace and Cathedral Museum, Orvieto 
Today's winner of the ugliest Madonna competition, with the runner-up in the ugliest Christ child category, early 16th century, attributed to a Pittore Veneto who didn't want his name mentioned. In the pinacoteca of the Museo Civico in Padua, 
A classic mystic marriage of St Catherine by the 'Master of the Embroidered Foliage' (ca. 1490), with . . .
a very scrawny baby Jesus. In the Museu Nacional de Arte Antiga in Lisbon. 
A non-stereotypical representation of the Christ child, a tryptych on the presentation in the Temple (attributed to Goswijn van der Weyden, early 16th century), also in the Museu Nacional de Arte Antiga
And also in the Museu Nacional de Arte Antiga, by Quentin Metsys or his 'circle', here are two scenes from the life of Christ, his disputations with the doctors in the Temple and, below, his presentation in the Temple. This depiction of Christ as a baby is probably unique.
He doesn't really look much like the Pantocrator yet.
Here, in the Museo di Stato in San Marino, are two distinctly odd representations of the Baby Jesus.
This one appears to have been done in the 18th century. Perhaps as a school exercise.
Curlilocks Jesus adorns one of the side chapels in the Cattedrale di Santa Maria del Bosco in Cuneo, Piemonte region 
This strange Madonna and Child, in the Museo Diocesano in Albenga in Liguria, is identified as created by a 13th century stonecutter from Como. 
It appears from the information panels that medieval religious sculpture flourished in the region of the Valle d'Aosta in large part because of the continuous flow of pilgrims trudging down the Via Francigena pilgrim route towards Rome. This Madonna and baby (by a 'Scultore piemontese-aostano') is dated to around 1270-1280, in the Palazzo Madama in Torino (Turin). 
Perhaps it's best if we leave it here for now.