Ment to boost the experience of roleplaying a Pilgrim - you get new mechanics you can play with, getting portable Shrines to different Saints, Tribunal, Good Daedra and some suspicious 6th house ones. You can pray and make offerings to get a blessing. 

I've tried to stick to canon and lore. 

Get Shrines from different Temples, drop them on the ground on your journey, pray, pack them up.
As usually with mods I do, I've placed shrines to different Saints in different spots of Vvardenfell, so a player can have fun finding and gathering them. Ghostgate and High Fane are places where you can get all of them at once. Daedric and 6th House ones are hidden and semi-secret.


Here is the list where you can get particular shrines:
Ald-ruhn, Temple    - Folvys Andalor        Tribunal, Meris, Roris
Balmora, Temple        - Llarara Omayn            Ancestors, Roris 
Balmora, Temple        - Llathyno Hlaalu        Ancestors, Felms 
Balmora, Temple        - Telis Salvani            Tribunal, Llothis, Rilm
Ghostgate, Temple    - Nilvyn Drothan        Ancestors, Tribunal, All Saints
Gnisis, Temple        - Mehra Drora            Tribuanl, Llothis, Rilm
Maar Gan, Shrine     - Tralas Rendas            Tribunal, Felms, Aralor
Molag Mar, Temple    - Saras Orelu            Tribunal, Veloth, Aralor
Suran, Temple        - Elynu Saren            Tribunal, Delyn, Seryn
Vivec, High Fane     - Llandris Thirandus        Tribunal, All Saints
Vivec, Hlaalu Temple     - Llaalamu Sathren        Tribunal, Meris, Olms
Vivec, Telvanni Temple    - Melie Frenck            Tribunal, Delyn
Mournhold Temple: Hall of Ministry  - Nerile Andaren    Tribunal, Veloth, Nerevar


Holamayan Monaastery    - Tivam Sadri                    Azura, Tribunal, Veloth
Shrine of Azura, chest, right to the statue pedestal            Azura
Sunken Shrine of Boethiah, Bitter Coast [-8,-4], near statue head    Boethiah
Vivec, Arena Hidden Area, Altar to Mephala room, chest            Mephala

6TH House Shrine
Kogoruhn, rooftop,             Mysterious Ash Ghoul        6th House
Falasmaryon, Lower Level, shrine room     Mysterious Ash Ghoul        6th House
Ald-ruhn, Hanarai Assutlanipal's House, basement, in a crate        6th House
Subdun, Shrine, behind bells         Mysterious Ash Ghoul        6th House
Yakin, Shrine, shrine cave, near the entrance, in a crate        6th House


There is a separate mod file adding places you can get shrines at for Tamriel Rebuilt:
Akamora, Temple                Ilmeni Bendalos        Tribunal, Olms, Delyn, Meris, Rilms
Almas Thirr - Temple            Naro Marvani        Tribunal, Meris, Olms
Almas Thirr, Monastery of St.Veloth    Drelasa Varo        Tribunal, Veloth
Ald Iuval - Temple            Muran Samarys        Tribunal, Roris, Felms
Bal Foyen - Temple            Tedri Adas        Tribunal, Rilms, Aralor, Llothis
Ranyon-ruhn                Punibi Rindo        Tribunal, Roris, Aralor
Narsis- Eight-Bones Temple        Relma Sarys        Ancestors, Delyn, Llothis
Narsis- Eight-Bones Temple        Milara Orvayn        Tribunal, Ancestors, Veloth, Olms, Delyn, Llothis
Narsis - Shrine of the Hidden Saints    Erver Drinith        Tribunal, Meris, Seryn, Rilms
Necrom, Sacellum of St.Llothis        Berethen Olameth    Ancestors, Llothis
Necrom, Dethral Ginith's Workshop    Dethral Ginith        Nerevar, Veloth, Ancestors
Necrom, High Offices            Ulvera Athenim        Tribunal, Nerevar, Veloth, Ancestors
Hlan Oek - Temple            Nivis Serethran        Tribunal, Veloth, Felms
Hlerynhul - Temple            Dramis Vendal        Tribunal, Seryn
Vhul - Temple                Lloryno Norom        Tribunal, Veloth, Rilms
Monastery of St. Felms            Venu Sadryon        Tribunal, Felms
Monastery of St. Delyn            Fathen Drel        Tribunal, Delyn
Monastery of St. Aralor            Dram Marvos        Tribunal, Aralor
Romithren Monastery            Lenaru Tolsen        Tribunal, Olms


Types of offerings:
Almalexia - Gold Kanet, Heather
Sotha Sil - Dwemer artifacts
Vivec - Fire Petal, Coda Flower
St. Nerevar - Rings
St. Veloth - Common Shoes
St. Felms - Scales and Meat
St. Roris - Bittergreen Petals
St. Rilms - Kwama eggs or Bread
St. Aralor - Animal Hides
St. Seryn - Native Dunmer Alcohol
St. Olms - Paper, Quill or an Inkwell
St. Delyn - Redware Pottery
St. Meris - Native Dunmer Crops - Ash Yam, Saltrice, Wickwheat, Hackle-Lo
St. Llothis - Cloth

6th House - Corprus flesh
Ancestors - Bonemeal, Ash
Azura - Soulstones
Boethiah - Skulls
Mephala - Daggers