Unlike the normal Mods page, I don't recommend these as starter mods per se, these are just funny additions to throw in to the game if you get bored/feel the need to.
Changes the art gallery paintings to Almir memes.
Turns the piggy bank from the 9th anniversary event into this monstrous thing.
Replaces the bulldozer charm with... this.
Replaces the Jingle Schwing stinger with a Better Call Saul stinger.
Adds the funny big shot guy as a heist track
Makes the Comically Large Spoons make several bonk effects when hitting enemies.
Changes Captain Winters and the SWAT turret announcements into senator Armstrong.
Self explanatory.
Replaces the cloaker sound with "HOOOOOG RIIIIIIIIIIIIIDAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!"
When someone goes into custody, it playes "HEHEHEHAW" (warning: very loud)
Makes the Dallas weapon charm look less dumb.
Changes the mask equip animation to be the animation that DOOM guy had when putting on his helmet.
Changes planks into Flex Tape.
When Swan Song activates, hear the wonderful chorus from Gangsta's Paradise.
Whenever someone is kicked, gage will say "get out" which is a voice line inspired by this wonderful masterpiece.
Changes Hoxton's pager lines to random raging British people.
Replaces the dentist briefing screen with "Hahaha, I was acting".
Makes the drill r o t a t e when broken.
Replaces many of Bodhi's voicelines with Jerma.
Turns trip mines into Junkrat's concussion mines (Overwatch).
Replaces first aid kits with ones from Left for Dead
Changes the text that says "Let the crew handle it" to "Let Aldstone handle it" for the safe house raid.
Change's Locke's background screen in the pregame lobby to him balling.
Turns ECMs into McDonald's french fries.
Turns the music from the Nightclub heist to the song "medic bag (i need it)". Using the "Bad Music" asset causes this not to play.
Makes Jacket sound like Microsoft Sam. In other words, he sounds like a dipshit.
Replaces medic bags with Minecraft cake blocks.
Replaces the pickaxe with a minecraft pickaxe.
Adds a track to the game (intended for the heist failed screen) that plays the Mission Failed song from COD MW3.
(Requires Music Modules to function)
Adds a Jetstream Sam skin (requires Legendary Armor Skins mod)
Replaces ammo bags with objectively worse looking ammo bags.
Changes the background of the heist failed screen to... this.
Changes the detection sound to "OH GREAT HEAVENS!"
Replaces this intro cutscene with this.
Replaces the pager operator's voice with Soldier and Engineer from tf2.
Makes a funny *ffftang* spaghetti western bullet ricocheting sound when you dodge.
Adds a track to the game (intended for the heist success screen) that plays Sweet Victory.
Turns player sentry guns into TF2 sentry guns.
Makes the original 4 masks really fucking stupid epic.
Replaces the cloaker voice lines with some funny (and some unfunny) memes. Full list is on the mod website.
Adds this horrifying thing as a heist track.