maximum bingo

Merry Christmas!

I'm not very creative so I tried to go for quantity over quality and made an entire bingo board of puzzles. Some of them are not very good so I decided you don't even need to solve all the puzzles — you just need to get a bingo! There is no hidden metapuzzle, there is no final answer (seriously). Super easy.

(All answers are SOWPODS-valid. Looking at source code is not part of the intended solve experience. Thanks to the various members of █████████████████████████████ for testsolving.)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

#1: Freebie

The answer is HELLO.