diff --git a/baby_carrier_lock_piece.scad b/baby_carrier_lock_piece.scad
new file mode 100644
index 0000000..e69de29
diff --git a/bidet_hole_cover.scad b/bidet_hole_cover.scad
new file mode 100644
index 0000000..83c6c69
--- /dev/null
+++ b/bidet_hole_cover.scad
@@ -0,0 +1,21 @@
+inner_hole_dia = 14 + 0.5;
+mid_hole_dia = 30 - 0.5;
+
+outer_dia = 40;
+
+height_step = 5;
+height_step_small = height_step/3;
+
+$fn=150;
+
+difference() {
+    union() {
+        translate([0,0,-height_step_small])
+        cylinder(r=mid_hole_dia/2, h=height_step+height_step_small, center=true);
+        translate([0,0,height_step_small/2])
+        cylinder(r=outer_dia/2, h=height_step_small, center=true);
+    }
+    cylinder(r=inner_hole_dia/2, h=height_step*2+0.01, center=true);
+    translate([0,-20,-20])
+    cube(size=[40, 40, 40], center=false);
+}
\ No newline at end of file
diff --git a/bus_spacer_ring_cabinets.scad b/bus_spacer_ring_cabinets.scad
new file mode 100644
index 0000000..63b7163
--- /dev/null
+++ b/bus_spacer_ring_cabinets.scad
@@ -0,0 +1,10 @@
+outer_dia = 16;
+hole_dia = 5.5;
+height=9;
+
+linear_extrude(height=height){
+    difference() {
+        circle(r=outer_dia/2, $fn=50);
+        circle(r=hole_dia/2, $fn=20);
+    }
+}
\ No newline at end of file
diff --git a/gate_mount.scad b/gate_mount.scad
new file mode 100644
index 0000000..7bc8862
--- /dev/null
+++ b/gate_mount.scad
@@ -0,0 +1,71 @@
+hole_dia = 14;
+hole_depth = 29;
+
+wall_thickness = 3;
+
+screw_hole_dia = 4;
+screw_hole_chamfer = 2;
+
+module slot(width, height) {
+    radius = width / 2;
+    squ_height = height-2*radius;
+
+    union(){
+        square(size=[width, squ_height], center=true);
+        translate([0,squ_height/2,0])
+        circle(r=radius);
+        translate([0,-squ_height/2,0])
+        circle(r=radius);
+    }
+}
+
+module sector(radius, angles, fn = 24) {
+    r = radius / cos(180 / fn);
+    step = -360 / fn;
+
+    points = concat([[0, 0]],
+        [for(a = [angles[0] : step : angles[1] - 360]) 
+            [r * cos(a), r * sin(a)]
+        ],
+        [[r * cos(angles[1]), r * sin(angles[1])]]
+    );
+
+    difference() {
+        circle(radius, $fn = fn);
+        polygon(points);
+    }
+}
+
+module holder() {
+    inner_radius = 10.5;
+    round_radius = 3;
+
+
+    minkowski() {
+        difference(){
+            circle(r=inner_radius+round_radius+0.1);
+            circle(r=inner_radius+round_radius);
+            sector(inner_radius+round_radius+2, [-30, 210]);
+        }
+        circle(r=round_radius, $fn=25);
+    }
+}
+
+module safety() {
+
+}
+
+linear_extrude(wall_thickness){
+    slot(30, 60);
+}
+
+my_offset = -13;
+
+translate([0,my_offset,wall_thickness])
+linear_extrude(wall_thickness)
+holder($fn=100);
+
+color("lavender") {
+    translate([0,my_offset,4])
+    circle(r=10);
+}
\ No newline at end of file
diff --git a/pump_rubbers/extra_ring.scad b/pump_rubbers/extra_ring.scad
new file mode 100644
index 0000000..d57cdd5
--- /dev/null
+++ b/pump_rubbers/extra_ring.scad
@@ -0,0 +1,11 @@
+third_dia = 63;
+outer_dia = 81;
+
+$fn=50;
+
+linear_extrude(height=2, center=true, convexity=10, twist=0) {
+    difference(){
+        circle(r=outer_dia/2);
+        circle(r=third_dia/2);
+    }
+}
\ No newline at end of file
diff --git a/pump_rubbers/one-way-rubber.scad b/pump_rubbers/one-way-rubber.scad
new file mode 100644
index 0000000..a9711c6
--- /dev/null
+++ b/pump_rubbers/one-way-rubber.scad
@@ -0,0 +1,30 @@
+inner_hole_dia = 6.5;
+second_dia = 44;
+third_dia = 63;
+outer_dia = 83;
+
+thickness = 3;
+outer_thickness = 7;
+
+$fn=50;
+
+translate([0,0,thickness/2])
+linear_extrude(height=thickness, center=true, convexity=10, twist=0) {
+    difference(){
+        circle(r=second_dia/2);
+        circle(r=inner_hole_dia/2);
+    }
+
+    
+
+    translate([0,-25,0])
+    square(size=[25, 20], center=true);
+}
+
+translate([0,0,outer_thickness/2])
+linear_extrude(height=outer_thickness, center=true, convexity=10, twist=0) {
+    difference(){
+        circle(r=outer_dia/2);
+        circle(r=third_dia/2);
+    }
+}
\ No newline at end of file
diff --git a/pump_rubbers/piston_rubber.scad b/pump_rubbers/piston_rubber.scad
new file mode 100644
index 0000000..b9752db
--- /dev/null
+++ b/pump_rubbers/piston_rubber.scad
@@ -0,0 +1,41 @@
+main_inner_dia = 60;
+main_outer_dia = 70;
+inner_dia_small = 40;
+height = 15;
+
+thickness = (main_outer_dia - main_inner_dia)/2;
+
+inner_radius = 2;
+outer_radius = inner_radius + thickness;
+
+extra_size = (main_inner_dia - inner_dia_small) / 2 - inner_radius;
+
+module ring(inner_radius, outer_radius){
+    difference(){
+        circle(r=outer_radius);
+        circle(r=inner_radius);
+    }
+}
+
+module quarter_ring(inner_r, outer_r,){
+    difference(){
+        ring(inner_r, outer_r);
+        difference(){
+            square(size=[2*outer_r, 2*outer_r], center=true);
+            translate([0,-outer_r,0])
+            square(size=[outer_r, outer_r], center=false);
+        }
+    }
+}
+
+rotate_extrude(convexity=10, $fn=100) {
+    translate([main_inner_dia/2,0,0]){
+        union(){
+            square(size=[thickness, height]);
+            translate([-inner_radius,0,0])
+            quarter_ring(inner_radius, outer_radius);
+            translate([-extra_size-inner_radius,-thickness-inner_radius,0])
+            square(size=[extra_size, thickness]);
+        }
+    }
+}
\ No newline at end of file
diff --git a/skoda_felicia_odometer_fix.scad b/skoda_felicia_odometer_fix.scad
new file mode 100644
index 0000000..94fb1b1
--- /dev/null
+++ b/skoda_felicia_odometer_fix.scad
@@ -0,0 +1,8 @@
+$fn=20;
+
+linear_extrude(2) {
+    difference(){
+        circle(r=2.5);
+        circle(r=1.5);
+    }
+}
\ No newline at end of file