Vanilla Spice is a resource pack that is basically just a texture pack but with a few 3D models and block variants. It aims to keep the overall vanilla vibes of Minecraft by leaving most textures alone, but spices it up by retexturing/remodeling some lackluster blocks.

Compatible from 1.13 to 26.2 and likely beyond. 1.13 to 1.20 may give an error, saying it is for a future version of Minecraft, but it will still work.

This resource pack includes:

Variants for:

short grass (shorter short grass, sparser short grass, vanilla short grass, clovers, clover flowers, short flower patches, and 3D pebbles!)
bookshelves (a variety of textures with different probabilities to make large bookshelves look more organic; slightly fancier style to suit enchantment rooms and library builds)
mushrooms (small, medium, large, extra large, and cluster variants for both brown and red mushrooms; more "cottagecore" styled; largest variant has shelf mushrooms that appear to grow out of the block below the mushroom, if sides are exposed)

3D models for:

ladders! (still very vanilla in texture, just 3D)
minecart rails! (also vanilla in style, just 3D)
pebbles (technically a short grass variant; uses stone's texture)

Remodeled:

fences (3 rungs instead of two; nether brick fences are modeled after wrought iron fences for victorian/goth builds)
fence gates (swing open at one hinge rather than being double doors, unique gate doors with custom textures designed after their respective door/trapdoor textures)

Retextured:

andesite, diorite, granite (and their polished versions to be more visually interesting and accurate to real life; polished diorite and granite are designed to work well as marble in builds)
stained glass (much more vibrant colors, sectioned into leaded panes to give a more traditional stained glass look; panes based on redstone lamps; clear, white, and grey stained glass has a single pane for simple windows)
resin blocks (including bricks and clumps, are given a more realistic deep amber color and shading, rather than flat orange)
iron block, iron door, iron trapdoor (deeper metallic grey color to better represent real iron; block has studs like copper; iron door retextured to suit a larger variety of builds)
iron bars (simple wrought iron fence design that also works as bars)
copper bars (more resemble old fashioned elevator gates rather than prison bars)
lanterns (have a wire grate to fit the vibes of the stained glass and iron blocks)
carpets (subtle knitted/braided texture; added fringe to model; slightly warmer colors)
bricks (slight variation in color for each brick to make them less uniform)
mud bricks (slightly more grey with a different brick pattern to allow for versatile role in builds)
red nether bricks (fishbone brick pattern with brick color variation, also to allow for a more versatile role in builds)
glowstone (has a warmer glow from within and compliments netherrack better)
rain! (to be whiter and more transparent for softer rain showers)

Tweaked:

iron chain (including those in hanging signs, recolored to match iron blocks)
chiseled bookshelves (wooden sides better match normal bookshelves/oak planks, books themselves blend in better with regular bookshelves)
nether bricks (copied the small brick layer for the top brick layer to allow brick pattern to interlock correctly)
iron items (darker colored, yet shiny to distinguish from stone)
leaf litter (richer fall colors)
campfire smoke (highlighted on the underside of some puffs, as if illuminated by the fire below)

Notes:

Optifine is not necessary; this pack should work with or without shaders.

Again this texture pack should work for Minecraft versions 1.13 through 26.2, bypass any "incompatible" warning by clicking yes; worst case senario is some textures/models are broken and you can just put this texture pack back on the "available" side.

If you prefer certain vanilla textures over mine, feel free to delete mine from the pack folder, just don't upload my altered pack as your own.

Likewise do not use any of my textures or models in your own resource pack. Of course I don't own things like 3D rails or bookshelf variants, but just don't copy paste.