Alternatively the snitch can be a small yellow ball (tennis balls work great) that is hidden before the game starts by a bystander or referee.
1	Alternatively	alternatively	ADV	RB	Degree=Pos	9	advmod	9:advmod	Discourse=joint-other_m:89->16:3
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	3:det	Entity=(92-object-new-cf1-2-coref
3	snitch	snitch	NOUN	NN	Number=Sing	9	nsubj	9:nsubj	Entity=92)
4	can	can	AUX	MD	VerbForm=Fin	9	aux	9:aux	_
5	be	be	AUX	VB	VerbForm=Inf	9	cop	9:cop	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	9:det	Entity=(92-object-giv:act-cf1-4-pred
7	small	small	ADJ	JJ	Degree=Pos	9	amod	9:amod	_
8	yellow	yellow	ADJ	JJ	Degree=Pos	9	amod	9:amod	_
9	ball	ball	NOUN	NN	Number=Sing	0	root	0:root|18:nsubj:pass	_
10	(	(	PUNCT	-LRB-	_	13	punct	13:punct	Discourse=elaboration-additional:90->89:0|SpaceAfter=No
11	tennis	tennis	NOUN	NN	Number=Sing	12	compound	12:compound	Entity=(93-object-new-cf4-2-sgl
12	balls	ball	NOUN	NNS	Number=Plur	13	nsubj	13:nsubj	Entity=93)
13	work	work	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	parataxis	9:parataxis	_
14	great	great	ADV	RB	Degree=Pos	13	advmod	13:advmod	SpaceAfter=No
15	)	)	PUNCT	-RRB-	_	13	punct	13:punct	_
16	that	that	PRON	WDT	PronType=Rel	18	nsubj:pass	9:ref	Discourse=elaboration-attribute:91->89:1
17	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	aux:pass	18:aux:pass	_
18	hidden	hide	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	acl:relcl	9:acl:relcl	_
19	before	before	SCONJ	IN	_	22	mark	22:mark	Discourse=context-circumstance:92->91:0
20	the	the	DET	DT	Definite=Def|PronType=Art	21	det	21:det	Entity=(35-event-giv:inact-cf2-2-coref
21	game	game	NOUN	NN	Number=Sing	22	nsubj	22:nsubj	Entity=35)
22	starts	start	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	advcl	18:advcl:before	_
23	by	by	ADP	IN	_	25	case	25:case	Discourse=same-unit_m:93->91:1
24	a	a	DET	DT	Definite=Ind|PronType=Art	25	det	25:det	Entity=(94-person-new-cf5-2-sgl
25	bystander	bystander	NOUN	NN	Number=Sing	18	obl:agent	18:obl:agent	Entity=94)
26	or	or	CCONJ	CC	_	27	cc	27:cc	_
27	referee	referee	NOUN	NN	Number=Sing	25	conj	18:obl:agent|25:conj:or	Entity=(79-person-giv:inact-cf3-1-coref)92)|SpaceAfter=No
28	.	.	PUNCT	.	_	9	punct	9:punct	_
