Try these for something different. I had work obsessed doing these a few years back. Some are easy some hard. Think books, sport, geography maths anything really. Tip to start think of obvious ones first, then look at not so popular letters like Z or J.
24 H in a D means 24 Hours in a Day, what do the rest of these mean?
26 L of the A
7 D of the W
7 W of the W
12 S of the Z
66 B of the B
52 C in a P (WJs)
13 S in the USF
18 H on a G C
39 B of the O T
5 T on a F
90 D in a R A
3 B M (S H T R)
32 is the T in D F at which W F
15 P in a R T
3 W on a T
100 C in a R
11 P in a F (S) T
12 M in a Y
8 T on a O
29 D in F in a L Y
27 B in the N T
365 D in a Y
13 L in a B D
52 W in a Y
9 L of a C
60 M in a H
23 P of C in the H B
64 S on a C B
9 P in S A
6 B to an O in C
1000 Y in a M
15 M on a D M C
No cheating! lol

Have fun.